4. The rationale of teaching mathematics is that it is “an excellent vehicle for the development and improvement of a person’s intellectual competence ”.
6. Wellington Primary School, Singapore Ministry of Education Singapore 2006 an excellent vehicle for the development and improvement of a person’s intellectual competence “ ” mathemati cs
15. John had 1.5 m of copper wire. He cut some of the wire to bend into the shape shown in the figure below. In the figure, there are 6 equilateral triangles and the length of XY is 19 cm. How much of the copper wire was left? 19 cm x 5 = 95 cm 150 cm – 95 cm = 55 cm
37. Children may do guess-and-check to get the solutions. Some children may observe a pattern / relationship. Guess-and-check and observe a pattern are examples of heuristics.
60. Roy has some picture cards. Samantha has 12 more cards than Roy. They have 20 cards altogether. How many cards does Samantha have? Roy Samantha 12 20