MAP Growth: MAP Growth Science

MAP Growth Science assesses science practices and core ideas in life, physical, and Earth/space science. Items ask students to interpret data, identify variables, use models, and explain systems rather than simply recall isolated facts. The test is adaptive and reports a RIT score; because it is untimed, students can read graphs and experimental setups carefully. Science items often combine a concept with a graph, table, or short scenario, so the evidence in the item must drive the answer.

Core rules and concepts

• Identify the independent variable (what is changed), dependent variable (what is measured), and controlled variables.
• Use units and check whether a calculation is reasonable.
• On graphs, read axes, scale, and trend before choosing.
• Distinguish correlation from causation and observation from inference.
• Use the formula or relationship that matches the scenario, then substitute.

Worked example

A block has mass 54 g and volume 20 cm³. What is its density, and will it float in water (density 1 g/cm³)? Density = mass ÷ volume = 54 g ÷ 20 cm³ = 2.7 g/cm³. Because 2.7 g/cm³ is greater than 1 g/cm³, the block is denser than water and will sink. The reasoning checks both the calculation and the comparison; a common error is to invert the ratio and get about 0.37 g/cm³, which would incorrectly suggest floating.

Traps that cost marks

Confusing mass with weight, inverting density or speed formulas, ignoring units, reading a graph’s slope as a value, and concluding causation from a single uncontrolled comparison. In experimental-design items, a missing control or a changed second variable usually invalidates the conclusion.