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Learn a basic concepts physical science with this fun worksheet. Your little one will decide which objects sink, and which ones float!

Sink or Float? #3

Introduce the basic concepts of sinking and floating with this fun worksheet. Your little one will decide which objects sink, and which ones float!

Floating and Sinking

If a ship went down, would these items sink or float? Your little one will decide, with this fun worksheet to help him hone sorting and categorizing skills.

Sink or Float? #2

Walk, sleep, run, eat! We're constantly using energy, whether we're moving or not. In this lesson, students learn how their bodies are constantly converting potential energy into kinetic energy and kinetic energy back to potential energy.

Potential And Kinetic Energy

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

Spooky Science Experiment

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.

Homemade Playdough

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

Homemade Ice Cream Maker

What&#39;s a liquid? What&#39;s a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Ice Cream Science

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

Gluep: Solid or Liquid?

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Sinking Ships for Science

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

Make Meringue Science!

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Making Measurements: How Big is Your Hand?

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

How Well Does Sound Travel Through a Gas? A Liquid? A Solid?

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

"Oil Painting" for First Grade Scientists

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.

Candle Burning Experiment

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

Play with Pulleys

Let your 1st grader become a mad scientist in this fun science board game, and encourage her to become a lover of the interesting subject.

Science Board Game

This classic children&#39;s game demonstrates how sound travels through air vs. through a solid.

How Sound Travels Through Air and Solids

Sink or float? This simple lesson has students guess the densities of different objects and place them into water to test their predictions.

Matter: Sink or Float

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Celery and Food Coloring Experiment

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Build a Castle...and Explore First Grade Geometry!

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don&#39;t!

Spinning Science: Disappearing Color!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Growing Jack-o'-Lantern

This classic children&#39;s game-connecting two cups with a string-demonstrates sound&#39;s ability to travel through air vs through a solid.

The Speed of Sound on a String

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Measuring Water

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

Explore Color Science with Grape Juice

This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

Experiment with Boiled Egg Science

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Oobleck Science: Solid or Liquid? 

This homemade parachute toy is incredibly easy to build. Plus, it gives kids an excuse to investigate and experiment...the backbone of kindergarten science.

Make a Parachute Toy

Engineers in training can get started with this simple wheel-and-axle construction activity.

Wheels and Axles

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