Our understanding of the atom has changed over the past few hundred years! Read about a few different theories on the structure of an atom.

To understand electricity, you have to get down to the basics. Explore the literally microscopic world of electrons to get a grasp on electricity.

Play a fun game that combines the periodic table with a classic concentration game.

Practice using the periodic table to calculate the number of neutrons in the atom of an element.

Can middle-grade chemists recover the missing information about these elements from the periodic table?

Explore the strength (or magnitude) of magnetic forces with this two-page physics worksheet for middle grades!

Learn all about digital and analog signals with this fascinating science worksheet for middle grades!

Sink or float? Your kid may be surprised to learn that the density of coke and diet coke aren't the same!

Learn all about charging by friction with this fascinating science worksheet for middle grades!

Boost your chemistry skills by filling in the missing information about the elements, using the included periodic table.

After he fills in the blanks, your student can hold on to this worksheet on hydrogen for reference when preparing for tests and quizzes on physical science.

In this engaging chemistry worksheet for middle grades, students learn about how concrete is made and how it is used in our society.

This list of elements is missing mega-information: a combination of category, name, number, or symbol. Can you fix them up?

This colorful worksheet builds an early chemistry foundation, giving middle school students practice with the periodic table of elements.

With two simple yet fun experiments, this worksheet covers the interesting topic of cohesion and adhesion of water.

There's been a periodic table of the elements robbery! Channel your chemistry detective skills with this fun worksheet.

Did you see the announcement in 2016 about new elements added to the periodic table? Put these new periodic elements flashcards in your study toolkit.

Kids can use this physics of snowboarding worksheet to learn about velocity and torque while trying out a fun physics experiment of their own!

This cool physics worksheet helps kids learn how centripetal force and centrifugal force can explain why short track speed skaters don't fall over during turns.

Calling all mad scientists... Electrify your enthusiasm for science! This awesome worksheet will show you step-by-step how to make an electromagnet.

This physics of figure skating worksheet teaches kids about angular momentum and moment of inertia by using the example of a spinning figure skater.

Give middle-grade students a painless beginner's introduction to the periodic table of elements with this fun worksheet.

These elements are all out of sorts! Can you check out the periodic table to find the missing information from each element?

This worksheet teaches kids about the physics of hockey, applying principles of classical mechanics to an effective slapshot.

This painless--even fun!--worksheet gets middle-grade students practicing with the information in the periodic table of elements.

Some devious mice have stolen important information from the periodic table. Can middle-grade chemists put the elements back together again?

Important information has gone missing from the periodic table. Can you fix up these elements so that they read the right way?

In this worksheet, kids learn about basic physics concepts like mass, momentum, and velocity by applying them to a popular winter sport: slalom skiing!