The Effects of LAP Fractions on Addition and Subtraction of Fractions with Students with Mild Disabilities

By D. Test, M. Ellis. 2005

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Interventions to Improve Fraction Skills for Students With Disabilities: A Meta-Analysis (2019, methodology): “However, Bouck et al. (2017); Joseph and Hunter (2001); Kim et al. (2015); Scarlato and Burr (2002); Test and Ellis (2005); Yakubova, Hughes, and Hornberger (2015); and Zhang et al. (2016) each measured only one.”
A Review of the Literature: Fraction Instruction for Struggling Learners in Mathematics (2011, methodology): “Interventions involved in the studies included a three-step strategy with Joseph and Hunter (2001) using a cue card, and Test and Ellis (2005) developing a mnemonic (L-ook at the denominator and sign; A-sk yourself if the denominators will divide evenly; P-ick a fraction type), to teach computation…”
A Follow–Up of Mathematics Interventions for Secondary Students with Learning Disabilities (2007, methodology): “For example, Test and Ellis (2005) examined use of a ﬁrst-letter mnemonic strategy, LAP, to help students re-member the steps to adding and subtracting fractions with like and unlike denominators.”