Do you have a hard time locating intervention resources for your struggling math students? Do many of your students need interventions in math? This Operations and Algebraic Thinking GOOGLE DOCS Math Intervention RTI is a review of math skills from 3rd and 4th grade. Students will write expressions and draw arrays to solve word problems, find the pattern/rule in an in and out table, determine factors, and complete missing part of fact families. Great practice for NWEA and Act Aspire testing.