Explore 3-D shapes with your students and help them identify and talk about the relevant attributes of three-dimensional shapes, all while using real-world examples! Use this as a stand-alone lesson or alongside the Shape Models lesson.

Sometimes the best way to learn about something is to teach it! This lesson helps second graders become the experts on odd and even numbers as they prepare to teach younger students.

Help your class grasp the concept of "main idea" with this fun, hands-on lesson. Students will dive into mystery bags full of supportive detail clues to determine the main idea of each bag.

Help your students learn the standard measures of length and foster critical thinking with this engaging lesson. Use alongside The Smaller They Come or as a stand-alone activity.

Without natural resources, our world would be a very different place. Help your class understand the importance of water, plants, and soil with this exploratory science lesson.

This lesson will help students build an understanding of multiples as they learn how to subtract from multiples of 100!

Encourage your students to develop their own approach to measuring length with nonstandard units of length. Use this engaging lesson as a stand-alone lesson or alongside Measuring Feet...in Feet!

Get ready to do some shopping! In this lesson, students will learn about subtracting 100 from multiples of 100 when making big purchases.

Use Hokusai's "The Great Wave off Kanagawa" to inspire a fun watercolor resist painting with your students!