Showing Results for -word-problems : Page 40

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

Is that seed alive or not? Here's an exciting way for kindergarteners to make a seed museum that your child can watch, using simple household materials.

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

Kids grow sunflower greens from seeds for a hands-on gardening experience in this kindergarten life science activity.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

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 simple science activity that will help your child better understand how wells bring us water.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

Can't make it to the beach? Bring the science of ocean waves home with this fun earth science-related craft.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

Do this activity to help your kids see how seeds contain "baby" versions of big plant stems, roots, and leaves.

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

Build a bird feeder science craft that brings birds to your yard, and a smile to the whole family's face.

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

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

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

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.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

Conduct a simple experiment with your child to study how dirt tracks change as they age in this 1st grade science activity.

High school students learn about resistance, resistivity, and if copper is the best metal conductor in this great physics science fair project idea.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

Use simple materials to build a "worm hotel" with your kindergarten soil scientist...and see what worms really do all day.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.