Showing Results for mathematics answer key

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

First graders are learning basic addition and subtraction math facts. Practice in the sandbox with this fun outdoor math activity!

Have your child kick off their summer vacation by making a miniature water slide!

In this fun activity, your child will create their very own solar oven to bake s'mores!

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Here's a great early reading and science activity for curious children. Learn how to plant your child's name in seeds for a growing writing activity!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

Introduce your child to science with something they see everyday--their shadow!

Help your kindergarten science maven explore the water cycle without getting everything wet.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

In this project children practice the scientific method while playing with puffy paint.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.