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 Metric Weight Set 54 Piece

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₹ 4807

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Description

⚖️ Master measurements with colorful precision!

KID FRIENDLY DESIGN - Perfect for educational use with clear visual cues and safe materials
SPACE SMART STORAGE - Compact plastic box keeps your set organized and portable
VIBRANT COLOR CODING - Easily distinguish weights with bright, intuitive colors
PRECISION IN EVERY GRAM - 54 stackable weights from 1g to 20g for exact measurements
VERSATILE LEARNING TOOL - Ideal for science kits, math lessons, and hands-on experiments

The Learning Resources Metric Weight Set includes 54 stackable, color-coded weights ranging from 1g to 20g, housed in a compact plastic storage box. Designed for educational use, it supports hands-on learning in math and science with durable, kid-friendly materials.

Specifications

ASIN	B000URFT3G
Age Range Description	Kid
Battery Types	No batteries required
Best Sellers Rank	#194,792 in Toys & Games ( See Top 100 in Toys & Games ) #5,076 in Science Toys & Kits
Brand	Learning Resources
Colour	Multicolor
Country of Origin	USA
Customer Reviews	4.6 out of 5 stars 649 Reviews
Educational Objective	Color Recognition
Global Trade Identification Number	00765023042924
Is Assembly Required	No
Item Dimensions	15.5 x 11.2 x 3.8 Centimeters
Item Weight	0.32 Kilograms
Manufacturer	Learning Resources
Manufacturer Part Number	LER4292
Material	Plastic
Model Number	LER4292
Number of Players	2-4
Operation Mode	Manual
Size	Medium, Small
UPC	858160441337 885520233547 765023042924
Unit Count	1.00 Count

Reviews

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

A**A

Gewichte für Kinderwaage

Stapelbar, verschiedene Stärken haben verschiedene Farben. Deshalb für Kinder gut erkennbar. Wurde zur Ergänzung einer Wasge gekauft .

16.01.2026

K**H

Learning basic math

17.10.2021

K**Z

Neat and easy to store and carry.

21.03.2021

F**U

parfait

parfait, merci

22.12.2024

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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