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Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

This middle school project examines the strength of horizontal versus vertical pointing eggshells.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Recycling may be a confusing concept for your little one, so take the time to teach them the magic of compost - right in your own backyard!

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

Determine which material produces the strongest static charge.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

Celebrate April showers with a springtime arts and crafts activity: make sparkly, shiny raindrops with your kid.

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

In this activity, find out who the flowers' "partners in crime" are by being a flower spy!

Help your kindergartener identify and sort eight different kinds of common seeds on this "seed wheel" plate you can use all growing season.

Your child will create an adorable Christmas tree from their footprint and practice counting while decorating their tree with objects of a variety of textures.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

This project determines what category of person is most likely to be ticklish.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

Teach your preschooler some physics that she can relate to with this fun and simple activity!

This experiment investigates the relationship between the temperature of a candle and its burn rate.

Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

Explore concepts in current and coltage with these Van de Graaff generator experiments.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

Melt the ice, but save the lawn. The objective of this science fair project is to explore the effects of different substances on melting ice.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.