"solar binocular"

Lessons in Optics and Light in the Palm of Your Hand Colorfully illustrate additive and subtractive color mixing, color transmission, absorption and filtering of the different wavelengths of light with this set of primary and secondary color mixing paddles. You can also use the diffraction gratings in this set to view spectra from different light sources. Show students how a spectroscope, colored lights, and even polarized sunglasses work with the contents of this set.

Primary colors filter set.

The life-like Didactic Spine was cast from a natural spine.

Created especially to meet the requirements of the GLOBE program.

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Explore spatial awareness, shape recognition, pattern design, proportions, fractions, and more.

Book & Downloadable Content Combo Reference

Practice patterning, grouping, sorting, counting, numbers, addition, subtraction, multiplication, division, measurement, and more with these colorful ³/₄" cubes.

Plastic pony beads are perfect for a huge variety of crafts and experiments.

Ishihara Color Blindness Test Charts help students evaluate congenital, complete, and incomplete color blindness.