In this worksheet, students analyze different parts of a letter and insert the appropriate punctuation including a comma, period, colon, question mark and semicolon.

In this cell worksheet, students use the code to find out the other name for a nerve cell. Students write the letter that matches the pictures in the space above each picture.

In this brain cells worksheet, students learn about neurons. Students read about the different types of neurons and their life span. Students also study the neuron diagram and glial cells.

Students isolate DNA from different food sources. In this biology lesson, students research DNA extraction. They analyze DNA stands collected from the lab, and compare the differences between each.

Learners research about the animals found in Burgess Shale. In this earth science lesson, students evaluate the significance of fossils in human history. They create models of their chosen animal.

Students explain the function of DNA in the body. In this biology lesson, students build a DNA model using simple materials. They demonstrate how bases pair up in the helix.

In this phone bills instructional activity, students read the article, answer true and false questions, complete synonym matching, complete phrase matching, complete a gap fill, answer short answer questions, answer discussion questions,...

In this English worksheet, students read "UC Issues Chinese Toothpaste Warning," and then respond to 7 short answer and 8 true or false questions about the selection.

In this English worksheet, students read "Bill Gates and Bono - Time's Persons of 2005," and then respond to 47 fill in the blank, 7 short answer, 20 matching, and 8 true or false questions about the selection.

For this English worksheet, students read "Movies Condone Drugs and Unsafe Sex," and then respond to 47 fill in the blank, 7 short answer, 20 matching, and 8 true or false questions about the selection.

In this English instructional activity, students read "China-EU Textile Talks Continue," and then respond to 47 fill in the blank, 7 short answer, 20 matching, and 8 true or false questions about the selection.

Students explore physics. For this science lesson, students discuss physics in their everyday lives. Students complete a physics worksheet.

The Obama administration and the Federal Reserve unveiled a $1 trillion program aimed at revitalizing lending to consumers and businesses. This program expands on a $200 billion effort unveiled previously. Details and reactions are...

Parts per million is a scientific unit of measurement that counts the number of units of one substance per one million units of another. But because it's hard to conceptualize really large numbers, it can be difficult to wrap our brains...

In this task, learners are shown a table of world population data and asked to explore whether linear functions would be appropriate to model relationships within the data. Aligns with F-LE.A.1.b.

For this task, students examine world population data from 1804 to 2012 and investigate whether an exponential function is appropriate for modeling the relationship between the world population and the year. Aligns with F-LE.A.1.c.

The purpose of this task is to help students understand the multiplicative relationship between commonly used large numbers (thousands and millions) by using their understanding of place value. Aligns with 4.NBT.A.1.

This unit introduces parts per million as a unit of concentration. This lesson is 1 of 3 in the series titled "Parts per Million."

Present evidence suggests that blue-green algae, and possibly other primitive microbial forms of life, were flourishing 3 billion years ago. This brackets the origin of life to within one billion years. Learn more here about...

Watch the earth change with this interactive app? What did Earth look like 250 million years ago? Or 1 billion years ago? Or 4.5 billion years ago? What was the climate like in the deep past? Find the answers with EarthViewer, an...

Hinduism is one of the world's oldest religions. It has complex roots, and involves a vast array of practices and a host of deities. Its plethora of forms and beliefs reflects the tremendous diversity of India, where most of its one...

There are over one billion cars in the world right now, getting people from point A to point B. But cars aren't just a mode of transportation; they also teach an excellent lesson in chemistry. Cynthia Chubbuck navigates the intricate...

With India's population topping one billion, this page deals with both population growth and sustaining the current population in India.

In this lesson, students conduct heat transfer experiments to investigate why the Earth is still hot at its core, even after billions of years since its formation. They will learn that the rate of heat transfer is dependent on an...