Empower students to think like mathematicians by having them create word problems related to subtracting mixed numbers. Use this lesson on its own or as support to the lesson Subtracting Mixed Numbers Using the Decomposition Strategy.

Finding the perimeter of a polygon is a simple process with addition! Use this lesson to teach your students how to find the perimeter of polygons.

Get your students comfortable discussing their math thinking in converting centimeters to meters. This lesson may be used on its own or as support to the lesson Converting Metric Measurements to Decimals & Fractions.

In this lesson, students will recognize volume as an attribute of solid figures and learn to calculate volume by counting cubes. This is a great introduction to the formula V = L x W x H.

What is weight? Help your students learn all about the difference between heavy and light in this fun, fast-paced lesson plan! Can be used as a stand-alone or support lesson for the How Much Does it Weigh? lesson plan.

Students will become more familiar with common metric measurements when working with mass and volume. In this lesson, kids tackle three worksheets to practice solving one-step metric unit word problems.

Fill ‘em up! This lesson teaches students to compare how much different containers can hold. Get ready for some overflowing fun!

Get your students explaining estimations and measurements of liquid volumes and masses of objects! Use this lesson independently or alongside Estimating Measurements of Mass and Volume Using Metric Units.

In this lesson, your students will use hands-on visuals to learn about fractions! Your students will love using manipulatives to practice placing fractions on a number line.

A hands-on approach makes geometry fun! Use this lesson to teach your students about the basics of perimeter with geoboards.

Advance your students from relative measurements to learning about standardized units with this lesson that teaches them about inches and feet by using common classroom objects.

Students will solve area problems by multiplying side lengths for rectangular shapes in real world contexts.

Your class will love this outdoor activity that teaches them how to compare the capacity of different containers.

Help your students' reasoning skills grow with this activity that has them make educated guesses on whether or not an item will be attracted to a magnet.

Marry metric measurements to the everyday world around you! Use this lesson plan to teach your class the fun of converting metric measurements into fractions.

Fill ‘em up! This lesson teaches students to compare how much different containers can hold. Get ready for some overflowing fun!

Do your students know the difference between a fact and an opinion? In this lesson, your class gets the practice they need to sort fact from opinion.

Students will begin to calculate volume of different rectangular prisms using base ten cubes and then transition to using the formula V = L x W x H. Students will then practice using the legendary fifth grade activity, Cootie Catchers.

Is it a fact or an opinion? In this lesson, students practice identifying and writing different facts and opinions.

Students will practice calculating volume as an additive property by making mock hamster mansions from boxes. Groups will calculate the volume of living space that they designed for their hamster in cm³ and document their work.

In this hands-on math lesson, your students will practice using content specific vocabulary as they learn all about comparison! This can be used as a stand-alone or support lesson for the Sizing Up a Bee Hive lesson plan.

Challenge students to convert measurements between their metric counterparts! Students will relate the measurements to real-world objects. Use this lesson as support for the Converting Metric Measurements in Word Problems lesson.

Make real world connections with your students when it comes to perimeter. Use this geometry lesson with your students to discuss real contexts and teach them how to calculate perimeter.

In this fun hands-on lesson, students will get introduced to comparing heavy and light objects. This can be used as a stand alone lesson or pre-lesson for the Heavier or Lighter lesson plan.

In this teacher-approved lesson, students will make and play with oobleck (corn starch and water), then write about their experiments. Young scientists will have a blast seeing their oobleck mixtures seemingly come to life.

Do your students respect their peers' opinions? This lesson teaches first graders that their opinions matter by encouraging them to write out opinions and back them up with reasons.

Forming and sharing opinions is a vital part of self-expression. Use the following lesson to help your students write opinions and support them with three convincing reasons.

In this highly engaging lesson plan, your students will have a chance to compare volume using water play. Can be used as a stand-alone or support lesson for the Which Holds More? lesson plan.

This experiment is a fun lesson that captures the ears, eyes, and minds of students! It combines writing, reasoning, predictions, and teamwork with candies and soda to produce a memorable lesson on chemical reactions and energy.

Let your students learn how to find the area of rectangular objects by doing hands-on activities. Your students will love finding the area of various rectangular objects around the classroom!