News: Pri Maths

Diagram 1 shows two identical overlapping squares. A vertex of the red square is positioned exactly in the middle of the blue square. The smaller yellow square represents the overlapping area. Diagram 1 In Diagram 2, the red square has been rotated about the vertex...

In an earlier blog entry, we discussed the role of trigger activities in the learning of new topics in maths. If you missed that discussion, click here to catch up. The following activities are extracted from the Mad Maths section of the topic of Circles (Primary 6...

Six identical rectangular boxes can be stacked into a cupboard 90 cm wide. Two arrangements are shown below. The first arrangement in Figure A leaves a 42-cm gap at the top. The second one in Figure B leaves a 10-cm gap at the top and another gap at the side. (a) In...

All you have to do is deposit one penny in a savings account in your own era, and when you arrive at the End of Time, the operation of compound interest means that the fabulous cost of your meal has been paid for. This, many claim, is not merely impossible but clearly...