Our Maths Balance just arrived in the post. I plan to use this as a tool in learning maths when they are older. At the moment, they just take it as another toy. At least, they understand which number is bigger and which number is smaller based on the slant of the rod.
I got interested in Maths Balance from several videos on YouTube months earlier, and have been on the lookout for Maths Balance ever since. I think it's a creative and fun way to learn maths and algebra. Check out the following videos which can be found on YouTube.