Word Problems: Multiple Strategies
Solve subtraction word problems within 20
Use manipulatives to model 'taking away' scenarios
Develop problem-solving confidence and perseverance
“Happy is the man who finds wisdom, the man who gets understanding. For her good profit is better than silver, and her revenue better than fine gold.”
— Proverbs 3:13-14 (WEB)Just as we solve math problems by breaking them down, wisdom comes from carefully understanding each step
Remind students about yesterday's addition strategies
Introduce subtraction word problems using 'taking away' concept
Students use counters to solve word problems
Simpler: Use fewer counters, simpler problems
Challenge: Create own word problems to solve
Review subtraction strategies learned today
Coming up: Tomorrow we'll learn about finding missing parts in whole-part problems
First-grade students are developing concrete understanding of subtraction
Keeping track of starting and ending amounts
Child's ability to model problem with counters