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Evolution - Biogeography, Adaptation, Species: Darwin also saw a confirmation of evolution in the geographic distribution of plants and animals, and later knowledge has reinforced his observations. For example, there are about 1,500 known species of Drosophila vinegar flies in the world; nearly one-third of them live in Hawaii and nowhere else, although the total area of the archipelago is less than one-twentieth the area of California or Germany. Also in Hawaii are more than 1,000 species of snails and other land mollusks that exist nowhere else. This unusual diversity is easily explained by evolution. The islands of Hawaii are extremely isolated and have had

Teaching the geologic time scale has always posed a bit of a problem for me in my Biology classes. My students don't need the depth of knowledge that they might get in an Earth Science class. On the other hand, the concept of geologic time and the appearance and evolution of life on Earth is VERY important to my class. One of my most favorite sayings, "Nothing in Biology makes sense except in the light of evolution" (Theodosius Dobzhansky, American Biology Teacher, 1973.) is a mantra in my classes. We can't teach cellular respiration without the concept of endosymbiosis, and we can't teach endosymbiosis until our students know the differences between prokaryotic and eukaryotic cells, etc, etc, etc. The history of life on Earth is (or should be!) woven into every single lesson we teach in a Biology class. Then "What's the problem?" you might be asking yourself. My problem is time. Not geologic time; just time to teach. It is a real struggle to cover everything in a year that needs to be covered! My solution was to find a way to quickly cover the concepts of geologic time and the evolution of life on Earth, without taking weeks to do so. Here are my goals. I want my students to: Know was is meant by the "geologic time scale." Be able to visualize the enormity of geologic time. Know when life first appeared on Earth. Know the order in which various life forms appeared. Know the importance of fossils, especially traditional fossils, to the study of evolution. Understand how scientists are able to date fossils that are found in various rock strata. Understand the relationship between mass extinctions and adaptive radiations. Have a clear and concise understanding of what happens in each era of Earth's history. I am extremely pleased with the activity I put together to accomplish these goals. This resource can be used in conjunction with your other lessons and materials you use on this topic, OR, (and here is the best part!) it can be used as a stand-alone activity that quickly covers the above topics in just a couple of class periods. The printable version is perfect for traditional classroom settings, but there is also a digital Google Apps version for distance learning and 1:1 schools. If you need to teach this fast, this is the activity for you! What concepts are covered in this resource? Definition of the geologic time scale. How the geologic time scale was developed by scientists. Relative dating and Radioactive dating. Earth’s history is divided into 4 Eras which are subdivided into smaller periods. How to read the information on the geologic time scale reference table. Comparing lengths of geologic time. The order of events in the evolution of life on Earth. Transitional fossils. Estimating the age of organisms based on relative dating. Rock strata. What will the students be doing? Students complete a 6-page handout on the geologic time scale and complete a 2-page timeline of the history of life on Earth. Students make a circle graph of the time spent in each era. Students use the included Geologic Time Scale Reference Table to answer a series of 30 problem solving questions. Students make a scale diagram showing the length of each era. Students look at pictures to evaluate characteristics of certain organisms. Students complete a relative dating cut and paste activity. Students using relative dating to estimate the age of certain organisms. Students complete a 2-page cut and paste timeline activity showing the evolution of life on Earth. Students are guided through an exercise that allows them to compare all of Earth’s history to one calendar year. As much as I love teaching these topics, there is a limit to what we can expect our students to absorb. We can't ask them to learn every event in every era, period, and epoch in geologic time. I have certain key events that I want my students to know, so I put together a one-page table outlining the most important events in Earth's history. The beauty of this resource is that with this one-page reference table the activity can be used as a stand-alone lesson. The students don't need prior knowledge or prior teaching. This lesson can be completed in two 1-hour class periods right before you begin your units on evolution. I would suggest having a biology textbook handy if students are seeing this information for the first time. There may be a few vocabulary words that they would need to look up. If you are in a big time crunch, let the students work in groups for one class period, and complete complete unfinished portions for homework. You can find this activity in my TpT store by clicking this link, and here is what you can expect to find included: 6-Page printable and editable student worksheet set 1-Page Geologic Time Scale Reference Table 2-Page Timeline Worksheet 8-Page Teacher Guide and Answer Keys All images needed for the "cut and paste" portions of the activity. Paperless digital google apps version for use in Google Drive, Google Classroom, Microsoft OneDrive, or similar. I hope this article has given you something to think about, and some new ideas on how to teach geologic time to your biology or life science students. Have fun teaching!

The geologic time scale is split into four major eras–Precambrian, Paleozoic, Mesozoic, and Cenozoic, and are subdivided into periods. The number beside the era or period in the infotoon below shows how many years ago it began. I thought it would be fun to show it as walk through the park. This would also make

Photographic Print of A schematic representation of geology and palaeontology #MediaStorehouse

Pinay Homeschooler is a blog that shares homeschool and afterschool activity of kids from babies to elementary level.

Geologic time is unimaginably long. Geologists puzzle it out using a calendar called the Geologic Time Scale.

This Geologic Time PowerPoint provides exciting, eye catching visuals and animations that help students learn more about the Earth's past. This invigorating time travel expedition, led by Dr. Brown and Marky McFry, will entertain your students while making it much easier for learners of a variety of ages to visualize the Earth's time scale. It provides an introductory understanding of the major events that have happened on Earth in the last 4.5 billion years. This is also a perfect instructional tool for "distance learning." In this zipped folder, you will receive this 27 slide presentation in PPS (PowerPoint Show) format AND in mp4 format (21 min video). Whether you have a PC, Mac, or Chromebook, you will be able to access this presentation in its fullest compatibility! The presentation is not editable due to the copyright of the premium animations provided. It focuses on each of the following: -How old is the Earth? How long has everything been here? -What is a timeline? How do I read a timeline? -How is the Earth's time scale divided into segments (Eons, Eras, Periods)? -When did these time periods occur? -An informational slide for every major time period that includes significant events such as life on earth, continental shifting, and geologic events. (note: These presentations do not have background music/sound, which allows you to narrate or use during direct instruction more easily) LOVE THIS PRODUCT? CHECK OUT THE OTHER FULLY LOADED POWERPOINTS HERE! You will not be disappointed! Guaranteed to invigorate your lesson, these animated presentations will astound your students. Enjoy!

At the end of this geologic time scale lesson plan, students will be able to describe how the relative and absolute age of rocks and fossil record provide

Anthropocene - Our New Geologic Time Scale Informational Texts! Anthropocene - Our New Geologic Time Scale Informational Text provides a very easy to use literacy and science article that discusses how scientists have renamed our current geologic time period due to the evidence of human activity on Earth. This science informational text comes in two levels for easy differentiation. Each also includes 5 analysis questions. If you like these articles look at hundreds of other articles we have that are of high interest for students and really help with the new tests coming out. https://www.teacherspayteachers.com/Store/Science-Teacher-Pro The Common Core in Math and Language Arts as well as the Next Generation Science Standards calls for a large increase in non-fiction reading and analysis. This products addresses Informational Text analysis in the Common Core. This article of Science by the Week provides teachers with an incredibly easy way to provide students with practice by reading true, current, and interesting science articles. Features: 1. Each article runs on one side of one piece of paper for easy printing. 2. The back of each article contains analysis questions that require students to think. 3. An answer key is given for each article. These articles have been tested and used by thousands of students in major school districts. They were designed to be given Monday of each week and then discussed in class on Friday but can be used in many different ways.

Nothing like a good criminal investigation to liven up geologic time scale! Based off my popular CSI projects, I have created Whodunnits? The Whodunnits plan to focus on single content topics as opposed to units and will focus more on skill building than application. Every day can't be a project day...

The Geologic timescale classifies geological layers to describe the timing and relationships of events in geologic history.

Competition in Cambrian seas helped cause an explosion in diversity.

The geological time scale is one of the crowning achievements of science in general and geology in particular.

In the context of the geological time scale, a 'period' is a substantial, but not the largest, division of time that is recognized for its unique geological conditions. Each period in the Earth's history is characterized by specific changes in the planet's geology and biosphere.

Objective Students will list major events in the Earth's geologic historyThis fun web quest will engage your middle school students to learn about Earth's history The first geologic time scale was proposed in 1913 by the British geologist Arthur Holmes (1890-1965). This web quest is perfect for ...

The geological time scale (GTS) is a system of chronological measurement that relates stratigraphy to time, and is used by geologists , pal...