Teaching and Group Activities for Understanding
Day 1 Teaching
Count in 2s to 50, marking the 2s on Number Grid ITP. Mark 2s from 52 to 100 using the (stripes) pattern. Repeat to count in 5s; spot the pattern. Note multiples of 2 and 5 (10s). Count on in 3s, noting which numbers which are also multiples of 2 (6x table) and 5 (15, 30, 45). Which is a multiple of 2, 3 and 5? (30)
-- Practise counting in 2s, 3s, 5s and 10s using an online activity.
-- Spot multiples of 2s, 3s, 5s or 10s by playing ‘waving multiples’.
Day 2 Teaching
Use ITP Number Grid to highlight the count in 3s. We are counting on in 3s, adding 3 each time, so 3 + 3 is 6, 6 + 3 is 9, 9 + 3 is 12. These are multiples of 3. Note the pattern. Add the digits of each multiple of 3 in turn and show that these always add to 3 or 6 or 9 – our mathematical test to check if any number is a multiple of 3: finding the digit sum of the number. Try this for some big numbers, e.g. 123, 412, 339 and 450.
Use the ‘Mixed Bags’ in-depth problem-solving investigation below as today’s group activity.
Or, use these activities:
-- Hop in 3s along a beaded line, recording the corresponding multiplication.
-- Roll a dice; ‘collect’ corresponding bunches of 3 bananas. Record the corresponding multiplication.