12 7 = ? – 7 + ? = 12 12 - ? = 7 12 = 7 + ? 7 = 12 - ? Have students model how they compared their cubes to determine the difference and how their comparisons relate to an equation or equations. How do you know your equation is correct? Teacher Note: Teacher asks higher level thinking questions. Examples: How did you solve this problem? How do you know your answer is correct? How many different equations can you write to solve the problem? Comparing More Worms—Partner activity SMP 2: Reason abstractly and quantitatively Activity 2 – students use their snap cubes to model and Materials Needed: explain why their equation is correct. UDL Components Resource Sheets 2A&B: Worms of Assorted Lengths Multiple Means of SMP 3: Construct viable arguments and critique (one worm per student lengths should vary from – Representation the reasoning of others students explain how student to student) Multiple Means for they solved the problem and why their snap Resource Sheets 3A&B: Worm Recording Sheet Action and cube model matches the problem and shows a Snap Cubes Expression correct solution. Multiple Means for Teacher Note: Adjust the length of worms according to Engagement SMP 4: Model with mathematics students use student needs. – snap cubes to model the problem. Key Questions Formative Assessment Teacher will assign student pairs. SMP 5: Use appropriate tools strategically Distribute Snap Cubes and Resource Sheet 3 Worm – Summary students use equations and snap cubes to solve Recording Sheet to each student. the problem. Students will compare worms. They will then discuss
12 – 7 = ? 7 + ? = 12 12 - ? = 7 12 = 7 + ? 7 = 12 - ? Have students model how they compared their cubes to determine the difference and how their comparisons relate to an equation or equations. How do you know your equation is correct? Teacher Note: Teacher asks higher level thinking questions. Examples: How did you solve this problem? How do you know your answer is correct? How many different equations can you write to solve the problem? Activity 2 UDL Components Multiple Means of Representation Multiple Means for Action and Expression Multiple Means for Engagement Key Questions Formative Assessment Summary Comparing More Worms—Partner activity Materials Needed: Resource Sheets 2A&B: Worms of Assorted Lengths (one worm per student – lengths should vary from student to student) Resource Sheets 3A&B: Worm Recording Sheet Snap Cubes Teacher Note: Adjust the length of worms according to student needs. Teacher will assign student pairs. Distribute Snap Cubes and Resource Sheet 3 Worm Recording Sheet to each student. Students will compare worms. They will then discuss SMP 2: Reason abstractly and quantitatively – students use their snap cubes to model and explain why their equation is correct. SMP 3: Construct viable arguments and critique the reasoning of others students explain how they solved the problem and why their snap cube model matches the problem and shows a correct solution. SMP 4: Model with mathematics – students use snap cubes to model the problem. SMP 5: Use appropriate tools strategically – students use equations and snap cubes to solve the problem.