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In this activity, learners use an origami template to design eight amino acids. Learners configure the amino acids to form a protein. Use this activity to introduce proteins and amino acids.

In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

In this optics activity, learners create flip books by drawing an image like an eye opening and closing on 24 small pages of paper.

In this activity on page 11 of the PDF, learners use candle wax to make "invisible" designs that are revealed with watercolor paints.

In this optics activity, learners build an animation tool to make mini movies. When you spin a phenakistascope, the pictures move so quickly that your eyes and brain can't separate the images.

In this activity, learners discuss and investigate how cameras, telescopes, and their own eyes use light in similar ways.

In this activity, learners build a figure that moves and "comes to life" when they pull its string.

In this activity (page 95 of the PDF), learners create Escher Staircase models similar to those that were used by Neurolab's Spatial Orientation Team to investigate the processing of information about

Learners explore soybeans, soak them in water to remove their coat, and then split them open to look inside. They also make a musical shaker out of paper cups, a cardboard tube, and soybeans.

In this activity, learners investigate color vision as well as plan and conduct their own experiments.

In this activity, learners will construct an air cannon as a model for the human ear.

In this activity, learners will experiment with water- and air-filled balloons as a way of dampening sound before it reaches their ears.

Find out what it would be like to have ears shaped differently from your own! Design and make different animal ears then try them out.

Learners will explore the chemistry of mucous and its importance to our health by following a process to make their own replica "snot." The activity includes a time and age recommendation, a materials

In this activity about camouflage, learners create a model that shows how a flounder is able to blend into a variety of environments.

In this activity, learners use beads, which represent amino acids, to create protein bracelets. Learners examine the relationship between amino acids and proteins.

During this activity, learners take part in a variety of tasks which involve moving and balancing different body parts.

In this activity about light and perception, learners create pictures in thin air.

In this activity on page 8 of the PDF, learners make a slimy substance very similar to mucus, and sprinkle it with glitter to imitate the way that allergens are trapped.

In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.