This infographic shows where and why humans are the smelliest species to mosquitoes.

10 Ideas to help students learn science vocabulary words10 Ideas to help students learn science vocabulary words-- awesome for 3rd grade, 4th grade, and 5th grade

You can reuse these recycling anchor charts year after year!

It’s no secret that we love hands-on science around here. My kids are always interested in learning more about any topic that is science related, and I’m always interested in trying out programs that are organized and have most of the work done for me. I was compensated for the time it took to

So the 1st day of school in high school science is approaching and you don't know what exactly to do with your students. There is so much

Science is a subject that children need to experience, not just read about in a textbook. Science experiments are a great way to make science class fun because of the hands-on opportunities! I don’t necessarily love teaching science, but I have enjoyed doing science experiments with my kids throughout your homeschool journey. The beauty of …

Last year after completing my full year biology curriculum, I decided to write a blog post to give context for why I chose the particular scope and sequence

6 Weeks Exam Tomorrow... Sing the song, play some cell games. Play Jeopardy Know the difference between subjective (opinions) and objective (facts). Accuracy versus Precision... Know Cell Organelles Structure and Function Mitochondria - makes food into energy Golgi is the trucking system Endoplasmic Reticulum (ER) packages proteins Nucleus - DNA the brain Cytoplasm - holds organelles in place Ribosomes - make protein Cell membrane - allows nutrients and waste in and out of cell and protects. How are organelles like body systems? Mitochondria turns food into energy like the digestive system.Some get rid of waste, lysosome - in animal cell only, like our excretory system. Plant cells have the large central vacuole, chloroplast and a cell wall. Animal cells do not. CTOOO? The organization of all living things... Cells make up Tissue works together to make Organs work together in Organ systems work together to form an Organism CELL TYPES Eukaryote - mutli cellular organism. Plant and Animal cells has nucleus (membrane bound organelle) Prokaryotes - single celled organism no nucleus - DNA floats freely. Links Cell Rap Life Processes Bill Nye Cells BBC Video: The Hidden Life of the Cell Great Images of Cells Cell Games Cell Games2 More Cell Games Cells Web quest Cells Game+ Osmosis working Cell R US Study Awesome Video on Osmosis Diffusion Osmosis Song Animations PowerPoints Click here to view Cell Structure and Function Click here to view Plant and Animal Cells Levels of Organization of all living things! Cells > Tissue > Organ > Organ Systems > Organisms Cells make up tissue Tissues makes up organs Organs make Organ Systems Organs Systems make Organisms Cell Shape and Movement You might recall that all living things are made up of one or more cells. As illustrated in Figure 1, cells come in many shapes and sizes. The size and shape of a cell relates to its job or function. For example, a human red blood cell cannot be seen without a microscope. Its small size and disk shape enable it to pass easily through the smallest blood vessels. The shape of a nerve cell enables it to send signals over long distances. Some plant cells are hollow and make up tubelike structures that carry materials throughout a plant. The structures that make up a cell also have unique functions. Think about how the players on a football team perform different tasks to move the ball down the field. In a similar way, a cell is made of different structures that perform different functions that keep a cell alive. You will read about some of these structures in this lesson. Figure 1 The shape of a cell relates to the function it performs. Cell Membrane Although different types of cells perform different functions, all cells have some structures in common. As shown in Figure 2 and Figure 3, every cell is surrounded by a protective covering called a membrane. The cell membrane is a flexible covering that protects the inside of a cell from the environment outside a cell. Cell membranes are mostly made of two different macromolecules—proteins and a type of lipid called phospholipids. Think again about a football team. The defensive line tries to stop the other team from moving forward with the football. In a similar way, a cell membrane protects the cell from the outside environment. How does the cell get nutrients? The cell membrane... Diffusion is process of things moving in and out of the cell membrane to maintain homeostasis (balance). Osmosis is diffusion with water. The amount of water and nutrients inside and outside the cell determines the flow of water through the membrane. Hypotonic Isotonic Hypertonic more water less solute equal amounts of solute and water more solute, less water water leaves nothing happens water enters membrane 1. Reading Check What are cell membranes made of? Figure 2 The cell wall maintains the shape of a plant cell. Figure 3 The cytoskeleton maintains the shape of an animal cell. Visual Check Compare this animal cell to the plant cell in Figure 2. Cell Wall Every cell has a cell membrane, but some cells are also surrounded by a structure called the cell wall. Plant cells such as the one in Figure 2, fungal cells, bacteria, and some types of protists have cell walls. A cell wall is a stiff structure outside the cell membrane. A cell wall protects a cell from attack by viruses and other harmful organisms. In some plant cells and fungal cells, a cell wall helps maintain the cell’s shape and gives structural support. Cell Appendages Arms, legs, claws, and antennae are all types of appendages. Cells can have appendages too. Cell appendages are often used for movement. Flagella (fluh JEH luh; singular, flagellum) are long, tail-like appendages that whip back and forth and move a cell. A cell can also have cilia (SIH lee uh; singular, cilium) like the ones shown in Figure 4. Cilia are short, hairlike structures. They can move a cell or move molecules away from a cell. A microscopic organism called a paramecium (pa ruh MEE shee um) moves around its watery environment using its cilia. The cilia in your windpipe move harmful substances away from your lungs. SPL/Photo Researchers Figure 4 Lung cells have cilia that help move fluids and foreign materials. Cytoplasm and the Cytoskeleton You might recall that water is the main ingredient in a cell. Most of this water is in the cytoplasm, a fluid inside a cell that contains salts and other molecules. The cytoplasm also contains a cell’s cytoskeleton. The cytoskeleton is a network of threadlike proteins that are joined together. The proteins form a framework inside a cell. This framework gives a cell its shape and helps it move. Cilia and flagella are made from the same proteins that make up the cytoskeleton. ACADEMIC VOCABULARY function (noun) the purpose for which something is used WORD ORIGIN cytoplasm from Greek kytos, means “hollow vessel”; and plasma, means “something molded” Cell Types Recall that the use of microscopes enabled scientists to discover cells. With more advanced microscopes, scientists discovered that all cells can be grouped into two types— prokaryotic (proh ka ree AH tihk) cells and eukaryotic (yew ker ee AH tihk) cells. Prokaryotic Cells The genetic material in a prokaryotic cell is not surrounded by a membrane, as shown in Figure 5. This is the most important feature of a prokaryotic cell. Prokaryotic cells also do not have many of the other cell parts that you will read about later in this lesson. Most prokaryotic cells are unicellular organisms and are called prokaryotes. Figure 5 In prokaryotic cells, the genetic material floats freely in the cytoplasm. Eukaryotic Cells Plants, animals, fungi, and protists are all made of eukaryotic cells, such as the ones shown in Figure 2 and Figure 3, and are called eukaryotes. With few exceptions, each eukaryotic cell has genetic material that is surrounded by a membrane. Every eukaryotic cell also has other structures, called organelles, which have specialized functions. Most organelles are surrounded by membranes. Eukaryotic cells are usually larger than prokaryotic cells. About ten prokaryotic cells would fit inside one eukaryotic cell. 1. Key Concept Check How are prokaryotic cells and eukaryotic cells similar, and how are they different? Cell Organelles As you have just read, organelles are eukaryotic cell structures with specific functions. Organelles enable cells to carry out different functions at the same time. For example, cells can obtain energy from food, store information, make macromolecules, and get rid of waste materials all at the same time because different organelles perform the different tasks. The Nucleus The largest organelle inside most eukaryotic cells is the nucleus, shown in Figure 6. The nucleus is the part of a eukaryotic cell that directs cell activities and contains genetic information stored in DNA. DNA is organized into structures called chromosomes. The number of chromosomes in a nucleus is different for different species of organisms. For example, kangaroo cells contain six pairs of chromosomes. Most human cells contain 23 pairs of chromosomes. In addition to chromosomes, the nucleus contains proteins and an organelle called the nucleolus (new KLEE uh lus). The nucleolus is often seen as a large dark spot in the nucleus of a cell. The nucleolus makes ribosomes, organelles that are involved in the production of proteins. You will read about ribosomes later in this lesson. Surrounding the nucleus are two membranes that form a structure called the nuclear envelope. The nuclear envelope contains many pores. Certain molecules, such as ribosomes and RNA, move into and out of the nucleus through these pores. 1. Reading Check What is the nuclear envelope? (r) Dr. Donald Fawcett/Visuals Unlimited/Getty Images Figure 6 The nucleus directs cell activity and is surrounded by a membrane. Manufacturing Molecules You might recall that proteins are important molecules in cells. Proteins are made on small structures called ribosomes. Unlike other cell organelles, a ribosome is not surrounded by a membrane. Ribosomes are in a cell’s cytoplasm. They also can be attached to a weblike organelle called the endoplasmic reticulum (en duh PLAZ mihk • rih TIHK yuh lum), or ER. As shown in Figure 7, the ER spreads from the nucleus throughout most of the cytoplasm. ER with ribosomes on its surface is called rough ER. Rough ER is the site of protein production. ER without ribosomes is called smooth ER. It makes lipids such as cholesterol. Smooth ER is important because it helps remove harmful substances from a cell. 2. Reading Check Contrast smooth ER and rough ER. (l) Dr. Donald Fawcett/Visuals Unlimited/Getty Images, (r) Dennis Kunkel / Phototake Figure 7 The endoplasmic reticulum is made of many folded membranes. Mitochondria provide a cell with usable energy. Processing Energy All living things require energy in order to survive. Cells process some energy in specialized organelles. Most eukaryotic cells contain hundreds of organelles called mitochondria (mi tuh KAHN dree uh; singular, mitochondrion), shown in Figure 7. Some cells in a human heart can contain a thousand mitochondria. Like the nucleus, a mitochondrion is surrounded by two membranes. Energy is released during chemical reactions that occur in the mitochondria. This energy is stored in high-energy molecules called ATP—adenosine triphosphate (uh DEH nuh seen • tri FAHS fayt). ATP is the fuel for cellular processes such as growth, cell division, and material transport. Plant cells and some protists, such as algae, also contain organelles called chloroplasts (KLOR uh plasts), shown in Figure 8. Chloroplasts are membrane-bound organelles that use light energy and make food—a sugar called glucose—from water and carbon dioxide in a process known as photosynthesis (foh toh SIHN thuh sus). The sugar contains stored chemical energy that can be released when a cell needs it. 3. Reading Check Which types of cells contain chloroplasts? (l) Dr. R. Howard Berg/Visuals Unlimited/Getty Images, (r) Dennis Kunkel / Phototake Figure 8 Plant cells have chloroplasts that use light energy and make food. The Golgi apparatus packages materials into vesicles. Processing, Transporting, and Storing Molecules Near the ER is an organelle that looks like a stack of pancakes. This is the Golgi (GAWL jee) apparatus, shown in Figure 8. It prepares proteins for their specific jobs or functions. Then it packages the proteins into tiny, membrane-bound, ball-like structures called vesicles. Vesicles are organelles that transport substances from one area of a cell to another area of a cell. Some vesicles in an animal cell are called lysosomes. Lysosomes contain substances that help break down and recycle cellular components. Some cells also have saclike structures called vacuoles (VA kyuh wohlz). Vacuoles are organelles that store food, water, and waste material. A typical plant cell usually has one large vacuole that stores water and other substances. Some animal cells have many small vacuoles. 4. Key Concept Check What is the function of the Golgi apparatus? SCIENCE USE V. COMMON USE envelope Science Use an outer covering Common Use a flat paper container for a letter Lesson Review Visual Summary A cell is protected by a flexible covering called the cell membrane. Cells can be grouped into two types—prokaryotic cells and eukaryotic cells. In a chloroplast, light energy is used for making sugars in a process called photosynthesis. Dr. R. Howard Berg/Visuals Unlimited/Getty Images Lesson Assessment Use Vocabulary 1. Distinguish between the cell wall and the cell membrane. 2. Use the terms mitochondria and chloroplasts in a sentence. 3. Define organelle in your own words. Understand Key Concepts 4. The nucleus of a eukaryotic cell contains genetic information stored in DNA. DNA is organized into what structures? A. chromosomes B. lysosomes C. mitochondria D. ribosomes 5. Which organelle is used to store water? A. chloroplast B. lysosome C. nucleus D. vacuole 6. Explain the role of the cytoskeleton. 7. Draw a prokaryotic cell and label its parts. 8. Compare the roles of the endoplasmic reticulum and the Golgi apparatus. 9. The arrow below is pointing to which cell part? A. chloroplast B. mitochondrion C. cell membrane D. cell wall 10. Which best describes vacuoles? A. lipids B. proteins C. contained in mitochondria D. storage compartments 11. Which cell shown below can send signals over long distances? A. B. C. D. 2. The figure below shows a cell. What is the arrow pointing to? A. chloroplast B. cytoplasm C. mitochondrion D. nucleus Interpret Graphics 13. Explain how the structure of the cells below relates to their function. 14. Compare Copy the table below and fill it in to compare the structures of a plant cell to the structures of an animal cell. Critical Thinking 15. List the function of each of the following cell parts: cell membrane, cell wall, chloroplast, cytoplasm, cytoskeleton, mitochondrion, and nucleus. 16. Name the kinds of organisms that have cells with cell walls. Name the kinds of organisms that have cells without cell walls. Briefly describe the benefits of cell walls for organisms. 17. Draw simple diagrams of an animal cell and a plant cell. Label the nucleus, the cytoplasm, the mitochondria, the cell membrane, the chloroplasts, the cell wall, and the central vacuole in the appropriate cells. Briefly describe the main differences between the two cells. 18. Analyze Why are most organelles surrounded by membranes? 19. Compare the features of eukaryotic and prokaryotic cells. 20. Compare prokaryotes and eukaryotes by copying and filling in the table below. 21. The photo below shows a protozoan. What structures enable it to get food into its mouth? Dr. Dennis Kunkel/Visuals Unlimited/Getty Images Writing in Science 22. Write a five-sentence paragraph relating the cytoskeleton to the walls of a building. Be sure to include a topic sentence and a concluding sentence in your paragraph. Copyright © 2011-2012 The McGraw-Hill Companies. All Rights Reserved. Texas Essential Knowledge and Skills Copyright © 2011. Texas Education Agency. All Rights Reserved. Levels of Organization of all living things! Cells > Tissue > Organ > Organ Systems > Organisms Cells make up tissue Tissues makes up organs Organs make Organ Systems Organs Systems make Organisms

This week’s question for Dr. Simple is a real gem and comes from six year old Abigail (you might find her mentioned here too)… How can I make two of me? I think if Abigail is asking these questions at the age of six then she will really go far, don’t you agree? Here is …

Chemical change happens every day. This lab is easy for teaching middle school chemistry because it demonstrates chemical change with basic household items.

Find fun, easy, and educational science experiments for kids to do at home to help teach them science in an engaging way.

Glowing in the dark can be achieved through chemical reactions or biological ones as well. Yet the chemistry of glowing in the dark - luminescence - is an incredible science to learn. So let's dive right into the glowing science of the night. This science article provides the perfect grab and go, print and provide resource that can supplement lessons. It is an article with questions to check comprehension and inspire scientific thinking. I am very proud of this series of science articles and they are rich with information and wonder at the majesty of science. Each science article includes a fun fact(s) to add to the knowledge gained from this article. Formatted in an easy to read and digest manner, each paragraph is numbered to help with referencing and each question answer has a paragraph reference number to point to the specific information (where applicable). WHY / WHEN TO USE: Useful for substitute (sub) teaching To extend students To increase scientific literacy in your class A weekly reading task Great as a lesson filler when class goes too fast To inspire students on a particular topic Give a selection of these articles for students to choose from WHAT'S INCLUDED: 3 page Google doc teacher version with answers 2 page Google doc student version with room to fill in answers (text boxes) 3 page PDF teacher version with answers 2 page PDF student version without answers (but space left to do so) OTHER ITEMS YOU MAY ENJOY: The Offline version of this article - link here The Periodic Table Article #21 - link here Acids & Bases Article #22 - link here Metals Article #23 - link here Alkanes, Alkenes & Alkynes Article #24 - link here States of Matter Article #25 - link here Endo- & Exothermic Reactions Article #26 - link here Bonding Types Article #27 - link here Redox Reactions Article #28 - link here Catalysts Article #29 - link here Fertilizer & Ammonia Article #30 - link here The first full Chemistry Article bundle - Articles #21 - 30 with a 33% discount - link here Acid Rain Article #91 - link here Fireworks Article #92 - link here Electrolysis Article #93 - link here Cleaning Chemistry Article #94 - link here Bioplastics and Green Chemistry Article #95 - link here Chemistry of Natural Colours Article #96 - link here Chemical 3D Printing Article #97 - link here Nanotechnology in Chemistry Article #99 - link here Smart Materials and Chemistry Article #100 - link here The second full Chemistry Article bundle - Articles #91 - 100 with a 33% discount - link here The Complete 20 article set bundle with a massive 44% discount - link here More will be coming to cover other subjects and other topics, so please do keep an eye out for more science articles from The Teaching Astrophysicist! If you have any questions, please feel to DM me on instagram @theteachingastrophysicist _______________________________________________ Let's Connect! Be sure to follow my: ★ Blog ★ Instagram ★ Linkedin ★ Pinterest _______________________________________________ Customer Tips: How to get TPT credit to use on future purchases: • Please go to your My Purchases page (you may need to login). Beside each purchase you'll see a Provide Feedback button. Simply click it and you will be taken to a page where you can give a quick rating and leave a short comment for the product. Each time you give feedback, TPT gives you feedback credits that you use to lower the cost of your future purchases. I value your feedback greatly as it helps me determine which products are most valuable for your classroom so I can create more for you. ☺ Be the first to know about my new discounts, freebies and product launches: • Look for the green star next to my store logo and click it to become a follower. Voila! You will now receive email updates about this store. ☺

Science labs are trickier in high school. You can no longer dig in your kitchen cupboard and pull out what you need. Luckily, there is an alternative.

A fun and interesting inquiry-based lesson series on the chemistry of smell to add to your middle school Matter and Its Interactions Unit!

Virology is targeted to middle and high school and it can even be used by students who have not yet studied cell biology at the high school level.

Virtual dissections can be a huge help in teaching science, biology, physiology and anatomy. Here are some of the best resources for your lessons and labs.

From now until tonight at 9 p.m. central time, my newest product, "Modeling Chemical Equations" will be free in my Teachers Pay Teachers...

Science classes, particularly lab classes, are one of the reasons some parents choose to enroll their secondary students in traditional classroom schools. We can become intimidated by secondary science because we remember lab tables with black tops and stories of chemistry experiments going awry with smoke and flames. I taught three high schoolers the secondary …

I have a confession to make. During my years in the science classroom, I was never able to sustain a long-term warm-up or bell-ringer routine with my

If you are like me you HATE lecturing. I simply cannot find the strength every class to get in front of students and blab on while...

Science lab decoration ideas do not need to cost a fortune. Here are 7 awesome ways to decorate your science lab on a budget.

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Chemical change happens every day. This lab is easy for teaching middle school chemistry because it demonstrates chemical change with basic household items.

Are you teaching a new science class for the first time? Are you overwhelmed with what lab supplies you will need and how to spend (or save) your budget? I’ve taught biology for many years, and compiled a list of 20 must-have items to get you started. Some materials can be found at the dollar ... Read more

Photosynthesis... there was something about it that stumped me as a teacher. It was important to me that my kids understood the big picture and that they were able to answer their questions, but teaching it

This is the ultimate list of resources for memorizing science facts to teach your kids about biology, anatomy, astronomy, geology, chemistry, or physics.

A few years ago, I looked at my biochemistry unit and tried to think of some way to revolutionize it. Monomers, polymers, carbohydrat...

Whether you love science or you know a little biologist to be, this poster is a cute and informative way to learn about the the smallest unit of life: The cell! A great tool to get kids excited, ask questions and learn about biology. ART WORK STATS: • paper size: available in two sizes: 8 in X 10 in or 11 in x 14 in • printed on Aurora Fine Art Natural (100% cotton rag, acid-free, matte) • printed with Epson archival pigment inks SHIPPING INFO: • print will be packed in a sealed clear cello bag with a thick backing board, and shipped inside a rigid protective envelope • proof of mailing with each item is provided © 2013 Rachel Ignotofsky All rights reserved. Usage, reproduction, or altering of artwork is not permitted without permission. Each piece of artwork is an intellectual property and is protected by the copyright law.

Environmental science is a growing industry with great salaries. There are many career paths you can take. Also, you can get technical skills with a GIS degree, which will make you a more competitive candidate and you will get entry level environmental science jobs.

If you're a high school science teacher (or a soon-to-be high school science teacher), I'd like to share with you how I preferred to start the year with my freshmen and sophomores- and why! Though I

Looking for free PDF chemistry worksheets that you can print? These pages offer questions and answers on separate page so you can check your work.

My students have always been fascinated with karyotypes. I usually teach about karyotypes right after long unit on cellular respiration and photosynthesis, right before I get into mitosis and meiosis. Students often have a lot of misconceptions about chromosomes and karyotypes. Here are a few web resources and teaching ideas you can use when teaching […]

Filled with visuals, this hands-on chart will help students determine the differences between cellular respiration and photosynthesis.

The Challenge: Lab Work Teacher: (hands out the lab sheets and materials tray) “Alright, we’re going to start the group activity now!” Student A: (grabs the tray of materials) “I’m going to pour the baking soda in the cup!” Student B: “STOOOOOOPPPPP!” Student C: “Ok. Student A can do that, then I’ll do the next ... Read more

Recently, blog readers have asked me to write about scope and sequence in my biology class. Determining the best scope and sequence for your students is very difficult as a new teacher. It’s so hard to know! What do I cover? When? And to what depth? I have found that my own personal preferred scope […]

Check out how to use potato catalase for your next enzyme lab!

Virtual dissections can be a huge help in teaching science, biology, physiology and anatomy. Here are some of the best resources for your lessons and labs.

Scaffolding, as many of you know, is a term educational experts (or people who want to sound fancy) use to describe how to break down a concept for students so that they can reach a goal or a level you want them to. It’s like building a ladder (or scaffolding around a building being […]

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