Whose own math education was on my mind with the creation of each lesson. Ratios. Ratio & Proportion, Percentage. Ratio & Proportion. Rate, Formulas. How High: Surveyor1s Trig Trick. Sample Course Requirements & Grading Policies. The students draw lines through each set of three data points and answer . They give us the ratios of reactants and products in a balanced chemical equation. 34. Chemical formulas are written so that the charges of cations and anions.