Showing Results for within 25 and rectangular arrays

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

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Help your child create a written message and practice their letters using sticks they find in nature. Here's how to get started.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

If your child aspires to be the next Frank Lloyd Wright, we've got some tips on building sand castles that last.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Checkerboard play challenges students to use spatial reasoning and computational thinking.

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

This activity is a fun challenge for students who have just started learning to program educational robots.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

Help your first grader design and create his very own bird feeder out of an empty milk carton.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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!

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Your kindergartener will have a blast helping you craft these fun, eco-friendly potted place cards.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

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.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.