What do a bicycle and a car have in common? They both move using the simple machine wheel and axle. In this lesson, students learn about how this simple machine works, and will identify objects that use a wheel and axle.

Show your class how combining two objects can create a new object in this hands-on science lesson. Students will learn why breaking apart an object doesn't change its mass.

Get your young scientists out of the classroom and into nature with this interactive science lesson.

The science of matter becomes as fun as it is educational when George gets in the mix! After watching Curious George work with his 'floppafication' pot, students will learn about matter and force.

Get your students to be builders and create structures with a variety of materials. Students will have the opportunity to be creative, cooperate in groups, and discuss their experience.

Use this lesson to teach your students about the planets that are the farthest away from the sun! Teach them about the planets with rings and the materials inside the rings.

This lesson will make your students realize that even though they take their heart for granted, the heart is working hard to pump blood to different parts of the body to keep them healthy and running!

Use this lesson to see how animals can have very interesting relationships. Some help each other, some benefit from others, and some hurt others. Young scientists are sure to benefit from this eye-opening lesson.

Show your students the parts that work together to make a person breath! Have them compare the lungs of a healthy person, the lungs of a smoker, the lungs of a city resident, and the lungs of a miner.

Use this lesson to teach your students about the different types of species and how to categorize them! Your students will learn characteristics about vertebrates and invertebrates.

Use hands-on activities involving play dough to show your students the layers of the Earth!

Help your students learn about earth with this lesson that teaches them about the most basic component-dirt!

Use this lesson to teach your students how the different parts of a brain are responsible for any act they do. This lesson will teach your students how a 3.5 pound organ controls a grown human being!

Windmills have been around for generations to grind food and create energy. During this challenge, students will use various materials and put their engineering skills to work by creating their own windmills.

One of the basic concepts in science is recognizing that all things can be classified as living or nonliving. In this lesson, your students will explore the characteristics of living and nonliving things with engaging hands-on activities.

This hands-on lesson will get your students to investigate some mystery liquids, and they will have to use their observational skills to figure out what they are.

Give your students the opportunity to explore the perspectives of different characters by using the "See Think Wonder" Visible Thinking Routine from Harvard's Project Zero.

Help your class gain a foundational understanding of matter by learning how to conduct inquiry and gain an understanding about the characteristics of gases. This lab will have your students amazed at what is really in the air.

Let's learn about the human body. Students will enjoy discovering different connective tissues in this comprehensive science lesson.

Use this lesson to teach your students about the various types of forests by drawing them on a box!

Students will learn their place in our solar system with this lesson that teaches them about different celestial bodies and their movement within the solar system.

Students connect dots to find stars used to navigate north and create a constellation of their own in this creative game format.

Energy is an essential part of our daily lives, but the resources that power the Earth are being threatened. In this lesson, students learn about renewable and non-renewable resources, including those that need protection.

What is recycling all about? What can and can't be recycled? What can I do to help others understand the importance of recycling? This activity helps students answer all of these questions as they learn about saving planet Earth.

This lesson, perfect for first and second grade learners, will help kids become environmental activists as they think of ways to help the Earth! First, students will brainstorm examples of what it means to reduce, reuse, and recycle. Next, students will partake in a creative art project where they trace their hands and think of way ways they can give the planet a hand. This engaging activity integrates creative writing skills and Earth science.

Walk, sleep, run, eat! We're constantly using energy, whether we're moving or not. In this lesson, students learn how their bodies are constantly converting potential energy into kinetic energy and kinetic energy back to potential energy.

Use this lesson to show your students the different types of solids, liquids, and gases. Show them how a solid turns into a liquid and how a liquid turns into a gas by using real life examples.

We aren’t mind readers, but we can still figure out why the author wrote a text and what an author thinks about the topic! This lesson will teach your students the main purposes for writing.

This lesson will provide students with an opportunity to become more comfortable with identifying and defining academic vocabulary words in a nonfiction text about a chicken's life cycle to support comprehension.

Use this lesson to teach your students about the characteristics of mammals and birds. Teach them about unique mammals and birds that do not have the characteristics of the average mammal and bird.