Learning Resources Metric Weight Set, Set of 58 Weights, 1g, 5g, 10g, 20g, 100g, 500g, 1000g

Nice for classroom.

It's a nice learning product, but I wish the case had arrived intact as a place to store them. The warehouse person must have thrown it into the box with our other educational purchases and shattered the case it was in. Since that's not the fault of the manufacturer etc. I won't mark them down for it. offers great visuals for kids! will get a lot of use out of these.

I bought these for my 4th grade son to use for his STEM project. They are very accurate and durable.

Using a scale that is accurate to 0.1g, I weighed each weight as soon as I received the kit. The larger weights are off by more than the smaller weights. The 1g weights are perfect (1.0). Weighing ten of these was 10.0, so spot on! The 5g weights all weighed 4.9g each, or 48.8 for 10 of them. Here are the other weights: 998.8g, 499.9g, 100.2g, {20.0g, 20.0g, 20.1g, 19.8g}, 9.9g, 4.9g, 1.0g. I don't care for the colors, but that doesn't matter if you're weighing. I do like that they're all stackable, very handy! The box is just an open box, which is good that there's no pre-molded custom fittings, and all the pieces fit in there without needing to be too organized.

This is a great math resource for my students.

Works great in a third grade classroom. Students can use easily, and it's very helpful for giving them a good idea of how much a gram versus a kilogram weighs.

They were great for my third grade class to tell the difference between a gram and kilogram. CCSS has us teaching metric mass and these were a necessity. There are more weights than I needed, but the kids loved playing/learning with them

Bought these to use with balance scale for students who struggle with algebra. They work well for that.

nice weights but the container is made of weak plastic that's already showing signs of bending and warping upon delivery.,the lid has flaps to hold it in place but do not stay in place so the lid is not locked down, hinges on the flaps already show wear and will break in no time. pls updated the container and lid design for durability. the weights do stack on top of one another but they do not click together to stay in place

Product arrived OK and nothing missing. The box and weights seem a bit battered and used, but think it is advertised as new.

Son geniales para utilizar con las balanzas analógicas. La incertidumbre en cada una de las piezas es mínimo. Excelente para utilizar en el laboratorio