Each time you visit the NRICH site there are usually some activities which are 'live'. This means we are inviting students to send us solutions, and we will publish a selection of them, along with each student's name and their school, a few weeks later. If you'd like to know more about what we're looking for, read this short article.

Over the summer break, instead of live problems, we are offering a selection of Maths at Home challenges, which are ideal for working on with friends or relatives. We hope you enjoy thinking mathematically at home.

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Take a look at these recently solved problems.

### Tangram Tangle

If you split the square into these two pieces, it is possible to fit the pieces together again to make a new shape. How many new shapes can you make?