Oregon Museum of Science and Industry

In this activity, learners grow germs collected from their hands and other objects. They cultivate the germs on a growth medium (such as slices of grapefruit or processed cheese) for a week.

This game explores the different reasons we choose to eat, and helps us be aware of when our body needs food and when it does not.

This lesson (on pages 15-24 of PDF) explores how sound is caused by vibrating objects. It explains that we hear by feeling vibrations passing through the air.

In this activity (on pages 25-31 of PDF), learners soak sponges with different amounts of plaster of paris to simulate different levels of calcification in bone formation.

In this activity, learners explore color, light and shadow by creating their own puppets to hold in front of a light source.

In this activity (on pages 55-66 of PDF), learners fold paper into origami shapes and then combine several identical shapes into a three-dimensional structure.

Learners observe a sealed test tube containing a small amount of solid stearic acid.

This guide outlines how to plant a garden even if you don't have a yard!

Learners investigate one factor affecting reaction rates: temperature. In a darkened room, two identical lightsticks are placed in water -- one in hot water and one in cold water.

This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.