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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
This comprehensive set features simple shaped
25" hourglass timers are perfect tools for teaching time management for kids
Each disk measures 1
Colors in this general selection set are: Permanent Lemon Yellow 254
Set includes a variety of colors
Acrylic Prism Set Postcards & Pads This comprehensive set features simpleThis Prism Set consists of three crystal clear acrylic, equilateral prisms 25mm faces, 25mm, 50mm and 100mm long. Use for experiments in diffraction, dispersion and spectrum formation! Recommended age 8+ years
US$ 34.50
US$ 72.90
US$ 34.40
US$ 72.90
US$ 25.00
