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In this delicious activity, learners get to make, taste-test and compare their own "brands" of homemade strawberry ice cream.

In this group or individual activity, learners are encouraged to watch birds near home or school—possibly where birds are nesting in a tree, pecking in a park, feeding from a feeder, or flying through

In this activity, young learners (2 years and up) explore dirt and what is in it by painting with mud.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity, learners build one or more edible coral polyps and place them together to form a colony.

In this outdoor activity and fun race, learners first find the most common type of tree in a forest site.

In this activity, learners will explore the physics of air by making a snake kite.

In this activity, learners construct a device that allows them to look over ledges or around corners.

Learners design different shaped bandages for different purposes. First, they draw their designs on paper.

In this activity (on page 6 of the PDF), learners plot the path of the sun's apparent movement across the sky on two days, with the second day occurring two or three months after the first.

In this activity, learners will construct a measuring device (snake "string") to improve their observation skills.

In this activity, learners play a series of simple games to investigate navigation without visual and sound cues.

In this craft activity, learners will explore the structure and purpose of antelope horns by constructing their own headband using toilet paper rolls and yarn.

In this activity about the relationship between food and energy (page 1 of PDF), learners observe and quantify the growth of yeast when it is given table sugar as a food source.

In this activity, learners explore sound by constructing an instrument using some metal pipes, rubber bands, and a baseboard.

Learners build models to learn about the special cells and structures that plants use to move water from their roots up through the stems and leaves.

Learners compare the properties and solubilities of Styrofoam (TM), ecofoam packing peanuts, and popcorn. First, the solubility of each substance is tested in water.

In this activity about olfaction (7th activity on the page), learners use natural ingredients to concoct their own perfume.

In this "Sid the Science Kid" activity from Episode 106: My Mushy Banana, learners explore the effects of decay by comparing and contrasting something (an old pumpkin) that's decayed with the same thi

In this quick activity (page 2 of PDF), learners will play a game using their observation and listening skills, interpreting clues from each other to deduce their secret animal identity.