Multiplication & Division
Build meaning for multiplication and division with equal groups, arrays, and number-line jumps, then grow fact fluency from patterns and the inverse relationship between the two operations
Time & Calendar
Meet the second — the second hand sweeps 60 seconds per lap — and the calendar: big months, small months and the special February.
Perimeter
Understand what perimeter means: the distance all the way around a shape. Walk a little ant around the border, then learn the perimeter formulas for rectangles and squares.
Area & Perimeter
Understand perimeter as the distance around a shape, add side lengths to find it, discover that rectangle area is length times width, and explore how the same perimeter can fence different areas
Multiply & Divide
Understand “times as many”, learn column multiplication of multi-digit numbers by one digit, and division with remainders — the remainder is always smaller than the divisor.
Rounding & Estimation
Understand rounding on the number line: see which ten or hundred a number is closer to, and build estimation intuition by finding the nearest benchmark