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.

Learning Resources Hexagram Weights Set Of 54 Weights Includes 1g

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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$101.79

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Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚖️ Master mass measurement with colorful precision!

STACK LEARN - Hexagonal, stackable design keeps weights stable and organized during use
STEM APPROVED FUN - Perfect for ages 8+ to master mass measurement concepts with hands-on play
VIBRANT COLOR CODING - Bright, distinct colors speed up learning and visual differentiation
READY TO USE NO SETUP - Comes complete with a durable storage box—no assembly required
PRECISION IN EVERY GRAM - Includes 20x1g, 20x5g, 10x10g, and 4x20g weights for accurate measurement demos

The Learning Resources Hexagram Weights set offers 54 stackable, color-coded plastic weights ranging from 1g to 20g, designed for children aged 8 and up. Ideal for hands-on STEM learning, this compact set includes a storage box and supports practical understanding of mass measurement using scales or balances.

Specifications

ASIN	B000URFT3G
Age Range Description	5 years to 9 years
Best Sellers Rank	#25,139 in Toys ( See Top 100 in Toys ) #300 in Educational Science Kits
Brand Name	Learning Resources
Color	Multicolor
Customer Reviews	4.6 out of 5 stars 657 Reviews
Educational Objective	Math
Global Trade Identification Number	00765023042924
Included Components	Weights
Indoor Outdoor Usage	Indoor
Is Assembly Required	No
Item Dimensions	15.5 x 11.2 x 3.8 centimeters
Item Type Name	Hexagram Weights
Item Weight	0.32 Kilograms
Manufacturer	Learning Resources
Manufacturer Maximum Age (MONTHS)	120.0
Manufacturer Minimum Age (MONTHS)	12.0
Manufacturer Part Number	LER4292
Material Type	Plastic
Model Number	LER4292
Number of Players	2-4
Operation Mode	Manual
Power Source	Hand-powered
Set Name	Hexagram Weights 54-Piece Set
Size	54 Pieces
Supported Battery Types	No batteries required
Theme	Space
UPC	858160441337 885520233547 765023042924
Unit Count	1 Count

Reviews

M**H

Weights and measures

Great fun while learning . My grandchildren found this to be helpful in understanding the way we measure weights etc Good quality value good

19.12.2025

C**N

Complemento a la báscula

Es una caja pequeña con pesas de varios pesos que se pueden encajar entre ellas, son todos pesos en gramos, en total todas las pesas deben pesar unos 400-500gr. Bien para empezar y complemento de la báscula de learning resources.

23.12.2014

M**I

Gut verpackt und leicht zu händeln

Gute Gewichte - wir brauchten sie für die Schule - schnell zu erkennen, dank der Farben und praktisch verpackt - alles bestens!

31.05.2026

K**H

Learning basic math

For my newphew to learn basic math and weight

17.10.2021

F**U

parfait

parfait, merci

22.12.2024

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