All 6-12 Math Staff: DESMOS is a dynamic online calculator and instructional program that helps students make connections and explore attributes of functions in a user-friendly environment. Come explore the three sides to DESMOS and increase your student engagement. EISD students are using the DESMOS calculator in test mode for the 8th grade STAAR and the Algebra I EOC and will soon be using the calculator as it is embedded in the online SAT.