Distributed school practice in addition produces large gains, roughly 50 per cent in examples correct, in school pupils as found¶

Claim · All claims
Evidence · 1 study · causal r1 · q2
Currency · newest study 1914 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Pupils given 90 minutes of distributed practice in adding columns gained about 50 per cent in examples correct and nearly one per cent per minute of practice. → H. H. Hahn and E. L. Thorndike 1914

Evidence¶

H. H. Hahn and E. L. Thorndike 1914¶

H. H. Hahn and E. L. Thorndike. (1914). Some Results of Practice in Addition Under School Conditions. The Journal of Educational Psychology, Volume V, Number 2. https://www.google.com/search?q=Hahn+Thorndike+1914+Some+Results+of+Practice+in+Addition+Under+School+Conditions

q2 · i? · causal · r1

Quasi-experimental school study: practice groups in grades 4-7 took a 15-minute initial test, 90 minutes of practice in periods of varying length, and a 15-minute final test; no-practice control groups took only the two tests. The article reports pupils "gained about SO per cent in the number of examples correct" and average gains per group by two scoring methods.

"It seems therefore safe to say that school pupils, taken as they are found, will gain nearly one per cent a minute in amount done correctly from an hour's distributed practice in adding, and will maintain or improve the percentage of correct answers in their total product."

Discussion¶

Related Claims¶

• Pupils of the same grade show enormous individual differences in initial adding ability and in gain from equal practice — related
• Drill classes gained 24.2 percent in total points in the second study, with per-operation gains of 18.5 to 34.2 percent — related