Here are some tips for strengthening memory and recall:
Information is retained more through repetition. For example, if something is re-read the day after it was learned, it has a greater chance of becoming a strong memory.Renewing information within 24 hours of when it was learned is the perfect time to reduce the chance of that information being lost. Reviewing again after a week, and again after a month, also has positive benefits for retaining in the long-term memory.
Mnemonic techniques are memory hooks some people use to retain information. They can be phrases, acronyms or short rhymes. For instance, for the colours of the spectrum, use ROY G BIV (red, orange, yellow, green, blue, indigo, violet) or SOH-CAH-TOA for trigonometry (sine = opposite/hypotenuse; cosine = adjacent/hypotenuse; tangent = opposite/adjacent).
Your teen will be more likely to remember information they learned at school with daily revision, which will help them consolidate information.