Have I told you that Lego (or similar) is one of my favorite resources? I think so.

And since I was little I loved the constructions that could be created with the famous plastic pieces.

Later, through my children, I had the opportunity to see how passionate they were about thinking, inventing and creating all kinds of situations.

Have I told you that Lego (or similar) is one of my favorite resources? I think so.

And since I was little I loved the constructions that could be created with the famous plastic pieces.

Later, through my children, I had the opportunity to see how passionate they were about inventing and creating all kinds of situations with their Lego pieces and dolls.

Our living room was filled with cities, houses and even (when they got older) rock concert stages or soccer fields and I believe that Lego has no expiration date.

I know I’m not saying anything new because thousands of boys and girls have dedicated (and dedicate) hours and hours of their lives to shaping their mental images thanks to this great game.

But not only can it be used to encourage creativity, it can also be an excellent material for working on mathematics.

It is especially useful for the entire spatial sense (plane figures, geometric bodies, scales, perimeters, areas…) as well as for the sense of measurement.

## How to weigh with Lego

The proposal is very simple, you will only need:

- a hanger
- a string or wool
- a few Lego-like construction pieces
- small objects to weigh

With this activity, boys and girls will explore the concept of unit of measurement, they will be able to estimate, make a table and reinforce the concept of equal and different.

If you can, use a “fence” Lego piece because then you can easily tie the rope and, in addition, you will not need to tie and untie every time you weigh something.

Depending on the weight of the object, you will only have to add or remove pieces.

Note: both ropes must be the same length.

With this activity, boys and girls will explore the concept of unit of measurement, they will be able to estimate, make a table and reinforce the concept of equal and different.

If you can, use a “fence” Lego piece because then you can easily tie the rope and, in addition, you will not need to tie and untie every time you weigh something.

Depending on the weight of the object, you will only have to add or remove pieces.

Note: both ropes must be the same length.

You can weigh all types of objects, lighter or heavier, and thus be able to take advantage of the activity to make a table with the results obtained.

Before tying the object on the hanger to weigh it, invite children to estimate its weight.

Always use identical pieces so that they can make estimates (and checks) by naming the number of pieces. For example, one marker is equal to one piece. A pair of scissors is equal to 22 pieces.

Although it is not a very exact scale, I found it to be an easy and very participatory way to introduce yourself to weight measurements.

What do you think about the idea? How do you work on weight at home or in class?