Showing Results for add and subtract

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Learn all about balance and motion as your child designs a corn maze!

In this design challenge, your child will use building bricks to create a funny face. The activity instructions include question prompts thta can help guide your child through the creative process, and promote their problem-solving skills.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This activity allows your kindergartener to translate what they observe into a beautiful poem.

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Help your kindergarten or first grade child use his creativity to make a beautiful magnetic patterned structure while discovering the wonders of magnets.

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

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

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

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