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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Learning Resources Hexagram Weights - Set of 54 Pieces, Ages 8+, Math Manipulatives for Kids, Teacher Supplies, Back to School, Classroom Must Haves

Learning Resources Hexagram Weights - Set of 54 Pieces, Ages 8+, Math Manipulatives for Kids, Teacher Supplies, Back to School, Classroom Must Haves

Product ID: 1594911

🌈Color-coded hexagonal design for intuitive sorting

📦Compact storage box keeps classroom clutter-free

⚖️54 precision weights for hands-on mass learning

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23253CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚖️ Elevate your classroom game with colorful precision weights!

PERFECT FOR AGES 8 - Designed to support STEM skills development in young learners and educators
ORGANIZED PORTABLE - Includes a sleek storage box to keep all weights neatly in place
MASTER MASS MEASUREMENT - 54-piece set with 1g, 5g, 10g, and 20g weights for versatile learning
DURABLE CLASSROOM READY - Made from sturdy plastic to withstand daily use by curious minds
VIBRANT COLOR CODED HEXAGRAMS - Engage visual learners with stackable, easy-to-identify weights

The Learning Resources Hexagram Weights set offers 54 durable, color-coded plastic weights in 1g, 5g, 10g, and 20g increments, perfect for hands-on mass measurement activities. Designed for ages 8 and up, this classroom essential includes a convenient storage box and is compatible with any balance scale, making it an ideal tool for enhancing STEM education and interactive learning.

Specifications

ASIN	B000URFT3G
Age Range Description	8+
Best Sellers Rank	#55,134 in Toys & Games ( See Top 100 in Toys & Games ) #577 in Sorting & Stacking Toys
Brand Name	Learning Resources
Color	Multicolor
Customer Reviews	4.7 4.7 out of 5 stars (669)
Educational Objective	Math
Global Trade Identification Number	00765023042924
Included Components	Weights
Indoor Outdoor Usage	Indoor
Is Assembly Required	No
Item Dimensions	6.1 x 4.4 x 1.5 inches
Item Type Name	Hexagram Weights
Item Weight	0.32 Kilograms
Manufacturer	Learning Resources
Manufacturer Maximum Age (MONTHS)	120.0
Manufacturer Minimum Age (MONTHS)	8
Manufacturer Part Number	LER4292
Material Type	Plastic
Model Number	LER4292
Number of Players	1 or more
Operation Mode	Manual
Set Name	Hexagram Weights 54-Piece Set
Size	54 Pieces
Supported Battery Types	No batteries required
Theme	Education
UPC	858160441337 885520233547 765023042924
Unit Count	1.0 Count

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23253CFA

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In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

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