Prepare the frame for the kite. First, mark the centre, or middle point, of the shorter piece of wood (the 60 cm piece) using a ruler and pencil. (What's the best way to find the centre?)

Next, take the longer piece and mark a line 30cm from one end. Then put the two pieces of wood together where the marks are, with the two pieces at right angles, so they form a cross shape.

(How can you check that the two pieces of wood make a right angle?)