Lesson Library

Mental add/sub strategies, the concept of difference, letter for the unknown, patterns.

Round to nearest 10/100; regroup once and twice in subtraction; order of operations with brackets.

Equal groups, arrays, number-line jumps, commutativity, times 0 and times 1.

Tables of 2, 4, 10, 5, 3, 6, 9, 7, 8 with partial products.

Read the clock to the minute, quarter hours, elapsed time across the hour, calendar.

Coins and dollars, counting up to make change, money problem solving.

Thousands place, compare four-digit numbers, add/subtract with regrouping, bar and line graphs.

Sharing and grouping, division tables tied to multiplication, remainders, word problems.

Millimetres, centimetres, metres, kilometres; grams and kilograms; litres and millilitres; °C.

Perimeter by adding sides; area by counting squares; area = length × width.

Parts of a whole, on a number line, equivalent, mixed numbers, like-denominator add/sub.