Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

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.

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

This clay "painting" activity encourages and supports creative development and critical thinking skills.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

In this activity your child will create their very own marble maze!

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Create a self-portrait from natural materials in this collage craft activity!

Help your child learn about animal classification with this fun and delicious activity.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

Challenge your learner to design and build a city of their own in this creative engineering activity.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!