My daughter needs small weights for her 7th grade science fair project, are these appropriate or for small children only?

They are NOT accurate. I have a digital kitchen scale that I have no reason to doubt, and the 1 gram pieces weight under while the 10 and 20 gram pieces are over. Do not expect accuracy for any purpose, including between themselves.

What is the total weight for all combined pieces? I'd like to use these in a ship building activity- are they waterproof too?

There are 54 pcs, totaling 300g. 20-1g, 20-5g, 10-10g, and 4-20g. Yes they are waterproof as they appear to be of a coated resin /plastic composite. Good quality.

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📚 Elevate Math Learning with Style!

COLOR CODED DESIGN - Easily distinguishable weights for effective learning.
DURABLE PORTABLE - Lightweight plastic with a convenient storage box.
PERFECT FOR AGES 8 - Designed to captivate young minds and enhance learning.
VERSATILE WEIGHT SET - 54 pieces for endless educational possibilities.
ENGAGING LEARNING TOOL - Transform math lessons into interactive experiences!

The Learning Resources Hexagram Weights set includes 54 stackable, hexagonal, color-coded weights designed for ages 8 and up. This versatile math tool is perfect for demonstrating mass measurement with a scale or balance, making learning both fun and interactive. The set features 20 each of 1g and 5g weights, plus ten 10g and four 20g weights, all conveniently stored in a durable box.

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£30.06

Duties & taxes incl.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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Manufacturer	Learning Resources
Brand	Learning Resources
Item Weight	11.3 ounces
Product Dimensions	6.1 x 4.4 x 1.5 inches
Item model number	LER4292
Is Discontinued By Manufacturer	No
Color	Multicolor
Material Type	Plastic
Number of Items	1
Size	54 Pieces
Manufacturer Part Number	LER4292

Learning Resources Hexagram Weights - Set of 54 Pieces, Ages 8+ Math Teacher Supplies, Math Learning Tools, Math Games for Kids

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