Fraction × & ÷
Understand fraction × integer and fraction division: multiplying an integer means adding that many copies — numerator × integer, denominator unchanged; dividing by a number equals multiplying by its reciprocal.
The Circle
Meet the center, radius and diameter of a circle; discover π by rolling a circle, then derive the circumference and area formulas.
Negative Numbers
Meet negative numbers through a thermometer and a number line: above and below zero, positive and negative — and why 0 is neither.
Expressions & Equations
Meet variables with a mystery box and evaluate expressions by substitution, then solve one-step equations on a balance by doing the same thing to both sides.
Intro to Statistics
Understand the mean, median, and mode, and learn to build and read dot plots of real data
Proportion
Understand the meaning of a proportion: an equation stating that two ratios are equal; master its basic property — the product of the means equals the product of the extremes — and decide whether two ratios form a proportion.