Learners use a pipette to mix small amounts of food coloring into water. They visualize the small quantities of parts per million and parts per billion. Contrary to the title, the lesson is about liquid amounts rather than gas amounts....

Your learners analyze population data to discern if it best fits a linear scenario. The idea of change by equal differences over equal intervals is enforced in this real-life task. 

Modeling population growth gives learners an opportunity to experiment with real data. Comparing the growth rates in this real-life task strengthens learners' understanding that exponential functions change by equal factors over equal...

Students discover the inequality of food distribution.  In the hunger lesson, students discuss how some places and people do not get the food they need to survive. Students role play distributing pretend meals to people (of unequal...

Can you guess how many hits YouTube gets in one day? If you said two billion, you're wrong. If you said three billion, you're getting closer, but you're still over a billion hits away! Use this article to bring current events into the...

The billions of cells that make up all living things are the focus of this resource. Understanding the differences between the cells that make up plants and animals is an important distinction; it is covered here quite-well. Some...

Learners practice dating fossils. They learn the concept of "deep time"--that earth was formed billions of years ago. They experience excellent hand-outs and virtual age tutorial links.

Learners calculate percent change and create lists of data. They enter the corresponding bushels of corn measured in billions to their list and display, then convert the acres into scientific notation and use the value on the home screen...

Students share ideas about keeping things safe, then read a news article about a huge vault built to store billions of seeds. In this current events lesson, the teacher introduces the article with a discussion and vocabulary activity,...

Expand on prior knowledge of place value to teach your class how to round whole numbers. This essential skill is explained with the help of a number line before introducing the explicit rules for rounding numbers up and down. Work...

Students research and explore the earth's past and make comparisons with the earth's present. They map out a timeline that explains how the earth and its organisms have changed over time. Studnets create a scale for their time line, they...

Class groups investigate the economic and political implications of a country's policies on genetically modified foods, craft a position paper detailing that policy, and share their findings with the class. Armed with this...

Students research underage drinking and read a report in the Journal of the American Medical Association about the issue. They interview experts on substance abuse and liquor store owners about their policies. Students publish their...

Create models of the infrared, visible, and ultraviolet portions of the electromagnetic spectrum. Working in small groups, your class can investigate metric conversions calculations. They will find the length of the waves in nanometers,...

Do you know who Jonas Salk is? Print these pages and have your middle and high schoolers read his biography in Time magazine. The reading itself is short, and it is followed with a key date chart, three reading questions, two connection...

Lab groups fill a section of dialysis tubing with glucose and starch solutions and suspend it in a water bath. They use iodine as a starch indicator and a glucose test strip to find out if either of the materials crossed the selectively...

How has the Internet of Things affected our lives? Scholars examine the massive influence of mobile devices in this analysis lesson, which begins with a seven-minute documentary clip. They also read a New York Times article (linked)...

Rotating through five stations, evolutionary biologists explore the question of how changes in DNA facilitate the changes in a population over time. High-quality, colorful cards of animals, skeletons, skulls, and DNA sequences can all be...

As the U.S. Postal System adjusts to virtual messaging, will snail mail slowly fade away? Examine the current phenomenon with your class through this political cartoon analysis, which has background information to give context for 2...

Understanding and analyzing data is a critical skill. Included here are three worksheets a list of countries with the largest oil reserves, a graph of the same, and an assignment. The class uses their data to create a bar chart then...

Background information is a great tool for any teacher. This resource provides background information on nutrition and world hunger, as well as ten different activity options to help learners understand this global issue. Each activity...

Learners gain an understanding of how the powers of 10 and scientific notation can be used to represent the scale of things in the universe. They relate the number of stars in the universe to the number of grains of sand on Earth's beaches.

Cell-ute the cell! Examine how surface-to-volume ratio relates to cell size through hands-on exploration, observe cell division under the microscope, and collect data on the stages of cell division in an onion root tip. Learners pull it...

Students study different formats of data and determine the nitrogen dioxide concentrations.  In this seasons lesson students understand the different relationships that NO2 can have.