. Grade 8, Illustrative icon

Laptop Battery Charge

Illustrative MathematicsVaries

This task uses a situation that is familiar to students to solve a problem they probably have all encountered before: How long will it take until an electronic device has a fully charged battery? The goal of the task is to find and use a linear model answer this question. One of the hardest problems for students in using quantitative reasoning is the clear definition of the quantities involved in a problem. Part (a) sounds very simple, but it is often harder than we think for students.

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