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In this activity, learners explore ray optics. Learners discover that they can use a magnifying glass to create an upside-down image.

In this activity, learners explore light, color and rainbows by making their own rainbow glasses.

Learners observe different light sources, outdoors and indoors, using prism glasses (diffraction glasses) and color filters.

In this activity, learners will use string and salt to lift an ice cube out of a glass of water. Salt depresses the freezing point of water, allowing it to melt around the string and refreeze.

Did you know that using a lens one can bend light to make pictures of the world? It's true!

In this activity, learners will create a magnifying glass called a waterscope, using water and household items, to examine various objects.

In this activity, learners assemble large cubes to make nano-related images. Learners discover how different objects are related to nanoscience and nanotechnology.

In this activity, learners investigate how inkjet printers produce tiny, precise drops of ink.

In this activity, learners discover that the way a material behaves on the macroscale is affected by its structure on the nanoscale.