IES Practice Guide from the What Works Clearinghouse
"Intervention at all grade levels should devote about 10 minutes in each session to building fluent retrieval of basic arithmetic facts."
--Recommendation 6 of 8 made by the Institute of Education Sciences (IES) reagarding Tiers 2 and 3 interventions for students in elementary and middle schools.
Access a summary of all 8 recommendations here.
Read the full IES practice guide here.
Quizlet Flashcards: Adding and Subtracting Integers
Quizlet Flashcards: Fractions to Decimals