Group items tagged

Students can manipulate mutations in bunnies, such as fur color and teeth length. By altering the environmental factors, students can see how the bunny populations change over time. For example, in a warm environment, more bunnies will have brown fur, but in the cold environment, more bunnies will have white fur. The student worksheet includes instructions on how the simulator works. Then students perform a variety of "experiments" to explore mutations in the populations. I include this as part of a unit on evolution, so students are familiar with VIDA charts. Students complete a chart at the end of the activity to summarize how variations in populations lead to adaptation.

The chart below gives some examples of how disease levels have declined since vaccinations began. Since the introduction of the measles, or MMR vaccine, annual cases of the illness have dropped by a jaw-dropping 99%.

When it comes to charting the tree of life, the most important difference between humans and sharks isn't limbs versus fins or even lungs versus gills. It all comes down to our skeletons. Sharks' skeletons are made of cartilage, placing them along with rays and skates in a group of jawed vertebrates called cartilaginous fish. Humans-along with most other living vertebrates-belong to the same group as bony fish, whose skeletons are made of bone. Scientists knew that these groups diverged more than 420 million years ago, but what the last common ancestor looked like remained a mystery. Now, new discoveries inside the head of a small fossil fish from Siberia may provide some clues.

But now, a century and a half later, scientists from 11 different institutions have joined forces to amass all of that information, plus new data, to create the most comprehensive version of the tree so far. As detailed in a recent article in Proceedings of the National Academy of Sciences, the new Tree of Life shows how 2.3 million different types of animals, plants, fungi and microbes are interconnected, and how those relationships have diverged since life began on Earth more than 3.5 billion years ago.

A Participation Quiz /Group Feedback is a strategy to help establish or reinforce norms for group work in a cooperative environment. While students work together in their group on a math task, the teacher takes public notes-on a document camera, white board, chart paper, or overhead projector-about the quality of their group work (social moves) and the quality of their mathematical discussions (math moves). The teacher can take notes on how students work together, their use of classroom norms, or the specific language they use to communicate their mathematical ideas.

As you read the chapters in Stiff, attach a post-it note to pages where you highlight something interesting. You should have 4-10 Post-It's per chapter, use the following symbol guide to create your notes. Stiff has 12 chapters, you are only required to map (Post-It) 8 of those chapters. You are welcome to read them all, of course, but you can also choose to focus on chapters that interest you the most or skip those you do not find interesting. You may wish to skim the chapters or browse the table of contents. Each Post-It will contain three items 1. Symbol (see chart) 2. Page and paragraph number 3. Content

CDC data visualization program presents a summary chart or table that is interactive. Different subsets of data can be displayed based on check menus. The focus is on the main causes of death, birth rates, and drug poisoning.