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Science Kids on the Loose

About the PBS KIDS Site

Each week, the series features five programs centered on a single scientific concept — these are called program cycles. In parallel with the series, the Web site is updated each week to present online games, videos, and printable activities also tied to the scientific concept.


Science tools help us observe, describe, and quantify our world. Some of them are actual physical objects, and others are reasoning skills that help us with science.

Related Games

Collection Jar: This game introduces science tools and provide experience with these tools, used in simple but authentic ways, to highlight their functions and their utility. Continue.
Character Journals: A journal is a great tool for a scientist. You can use pictures to describe your investigations. Continue.



Transformation & Change

Our investigations focus on observing and describing before-and-after states and identifying the conditions under which change occurs. For example, what has to happen for ice to melt, for bread to turn to toast, for seeds to turn into plants? These experiences set the stage for future formal learning about the details of these processes.

Related Games

Kitchen Magician: This game helps your child examine change caused by heat energy. It also illustrates examples of irreversible (chemical) change. By investigating before and after food states, kids understand how heat can change things permanently. Continue.
Mystery Lunchbox: This activity teaches observation and decay. Continue.




We build knowledge using our senses. What we know about the world depends on the information we gather through each sensory channel.

Related Games

Sandbox Symphony: Experiment with sound and understand beat and rhythm. Continue.
I Sense: The educational objective of this game is to learn and distinguish senses (smell, taste, touch, see, hear) and understand how senses provide information about our surroundings. Continue.




All kinds of scientists (biologists, chemists, physicists, psychologists, and others) study systems and how they function. The human body provides great examples of parts and systems that work together.

Related Games

Mix It Up: This game introduces kids to nutrition. Kids learn that foods belong to food groups, and that it is healthy to eat foods from each group. Continue.
Super Duper Antibodies: This game helps teach how antibodies destroy viruses. Continue.



Simple Machines

Simple machines help people do work. “Work” has a specific definition in physics, but a basic way to think about it is that work is making things move.

Related Game

Balancing Act: This game helps your child understand how a simple machine — the lever — works. Continue.



Backyard Science

One great place to do science is the backyard. Explore the homes of animals that live there like ants, birds or squirrels and observe their behavior, check out different kinds of leaves, and find out what dirt really is. Bugs, dirt, and flowers are naturally attractive to children, but they are also central to the sciences of entomology, geology, and botany.

Related Games

Say What? The educational objective of this game is to identify and repeat animal sounds and to understand that sounds are one way animals communicate. Continue.
Roly Poly Roundup: The educational objective of this game is to observe roly-poly locomotion and defensive behavior. Continue.



Human Body

The human body is an amazing system of parts that work together.

Related Game

Sid Says: The educational objective of this game is to demonstrate how we use our muscles by showing the different ways we can move our bodies through certain movements. Continue.




Observing and thinking about changes due to weather conditions provide opportunities to think about cause and effect.

Related Game

Weather Wheel: In this game, kids learn about weather by spinning the weather wheel, then choosing from many clothing options to dress Gerald weather-appropriately. Continue.



Force & Motion

Physics concepts help us explain really interesting stuff that happens all around us, every day.

Related Game

Fun with Friction: The educational objective of this game is to help your child explore friction, or the force that resists the motion of one thing on another thing, and that different surfaces create different amounts of friction. Continue.



Light & Shadow

We explore phenomena related to light – what light is, darkness, shadows and rainbows.

Related Game

Shadow Show: In this puzzle game, players are introduced to light sources, shadows and why they appear, and shapes. Continue.



Special Topics

Sid’s Science Fair: In this collection of nine games, visit Gerald, May and Gabriela’s science fair exhibits to explore a variety of preschool math concepts. Continue.
Gabriela Cleans Up: In this game we help teach about cleaning up and sorting trash into three types of recycling: glass, paper and metal. Continue.
I Want to Be a Scientist: Learn about different types of scientists with Gabriela and her mom in this fun exhibit in the Science Center! Continue.
Red Light, Green Light: In this game we learn about fun ways to get out and move our bodies. Continue.
Produced by: Funding is provided by:
Jim Hensen Corporation logo CPB ViNCi MetLife The Rosehills Foundation S.D. Bechtel Jr. Foundation logo The Arthur Vining Davis Foundations logo

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PBS Parents Newsletter

Find activities, parenting tips, games from your child's favorite PBS KIDS programs and more.