Teach your 1st graders HOW to think about addition and subtraction — not just memorize facts. This 28-page NO-PREP strategies unit covers Count On, Doubles, Make 10, Near Doubles, Fact Families, and Missing Addends. 45 day Unit (listed as 1 month for estimation as estimation) WHAT'S INCLUDED: • 6 strategy lessons, 2 pages each (skill practice + word problems) • Strategy anchor chart at the top of every lesson • Show-your-thinking exit ticket on every page • "Create Your Own" word problem extensi