Strategy and Trap Recognition

Five topics of pure test discipline, the layer over every content unit. Answering the question actually asked, units and scale, sign and boundary discipline, grid-in mechanics, and trap recognition across content. The errors here cost nothing mathematically and everything on the score report: right work, wrong report, wrong entry, unchecked trap.

Topics

6.1

Answering the Question Actually Asked

Units and Scale Discipline

Sign and Boundary Discipline

Grid-In Mechanics

Trap Recognition Across Content

Lesson

Diagnostic

after diagnostic

Reference The six disciplines this unit drills, one line each

Answer the ask, not the algebra

$\text{solve } x \to \text{reread} \to \text{grid the named quantity}$

Convert before computing

$90 \text{ min} = 1.5 \text{ h}; \quad \text{axis labels multiply at the read}$

The four sign posts

$a - (-b) = a + b, \quad (-a)^{2} = a^{2}, \quad \text{distributed minus reaches all, negative divisor flips}$

Boundary reads

$\text{at least } n: x \geq n; \quad \text{strict excludes, } \leq \text{ includes}$

Grid entry

$3\tfrac{1}{2} \to 7/2 \text{ or } 3.5; \quad \text{no symbols; fill repeaters or type the fraction}$

One-second checks

$\text{size, sign, direction, range, units, and the reread of the ask}$

Unit 6 tools

Challenge bank

1 / 60

60 open-ended problems.

Read the question, work it out, then flip the card to compare your reasoning to the worked solution. Mark each card so you can return to the ones that still bite.

Question

Tap card to reveal explanation

Worked solution

Tap card to return to question

Cumulative assessment

Test the unit.

Mixed items pulled from across the unit's topics, with no labels showing which is which. It surfaces the misconceptions that still bite when you cannot tell what a question is testing.