Growth

Finish a partly hidden solution

Whenyou practise a new procedure

Study a correct worked solution. Cover its final step and complete it yourself, then check. On the next similar problem, cover one more step if the first attempt was accurate. Reveal help when you are guessing.

Start tiny

Complete and check one hidden step.

Evidence grade AMeta-analysis, evidence-based guideline, or repeated findings

Pashler et al. (2007), IES Practice Guide, recommendation 2. Read the source ↗ Cao & Carvalho (2026), Striking the Balance, Educational Psychology Review. Read the source ↗ Worked examples and supported problem solving; adult artificial-rule studies do not establish universal transfer.

Growth: Supporting habits that improve the conditions for useful repetitions: preparation, consistency or necessary recovery.

From the screen to the fridge

Keep your practice in sight.

Library cards are free to read and print. Choose the ones you’ll use, put them where their cues happen, and keep returning to the practice. Our boxed collections are separate printed editions.