Q. As part of my school technology course I am required to research, design and construct a device of my own choice. The one I've chosen is the Koalapad and I need the address of the producers. Can you assist?

Kevin Robertson, Luton, Bedfordshire

A. The Koalapad, although distributed in the UK by Audiogenic, is manufactured by Koala Technologies in California. You can write to them at 3100 Patrick Henry Drive, Santa Clara, California, USA.

Don't be too disappointed if the material they send you isn't as helpful as you might wish. It's unlikely that they'd give you a full technical specification of the product, although you might get lucky.