For a wonderful introduction or review of equations try these excellent **Mobile puzzles.**

Don Steward has posted **this sum and product task** (developed in the UK by Barbara Ball and Derek Ball) which would be ideal for a starter. For example find three expressions such that the sum is 5d+5 and the product is 30d^{2}.

Simultaneous equations – visual **– ****Weigh the Wangdoodles!**

**Algebra Puzzles** – picture puzzles – find the value of the objects in the grid.

For another similar problem try **What’s it Worth?** from Nrich.

Use the **‘Search by Topic‘** function on Nrich for numerous rich problems.

Try the **Fido Puzzle!**

or a little mind reading – try **Regifting Robin** (turn the sound on).

Can you work out what is going on?

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