35b52a70_State_Standards___Project_SEED__Examples_in_SEED_Lessons
[Mathematical Practices] 5. Use appropriate tools strategically [Examples in SEED Lessons] 
Pencil and paper, charts, tables, graphs and diagrams are examples of the tools that are used in SEED lessons. Occasionally a calculator or a spreadsheet is best. Students choose which to use for particular problems.
Project SEED and Common Core State Standards | Project SEED
Examples in SEED Lessons