Lesson: Part–Whole Bar Models: Numbers up to 20 Mathematics • 2nd Grade

Students will be able to

• write an equation to represent a part–whole bar model,
• find a missing number in an equation represented by a part–whole bar model,
• recognize whether addition or subtraction is needed to solve a problem represented by a part–whole bar model,
• draw and complete a part–whole bar model for a given word problem,
• use addition or subtraction and part–whole bar models to solve a word problem.