Unit 3, Lesson 18
Patrones en la suma
Grado 1
Preparation
Lesson Narrative
In the previous lesson, students discussed how making a ten can help them find the value of expressions in which one addend is close to 10. In this lesson, students continue to add two addends within 20, focusing on how making a ten can help them add. In the first activity, students match addition expressions to their equivalent expression. In the second activity, students participate in a Gallery Walk, noticing patterns between expressions that represent a sum. In each activity, students have access to double 10-frames and two-color counters as they explore patterns they notice.
- Action and Expression
- MLR7
- Match (orally) expressions where 10 is an addend and other expressions that represent the same value. Describe (orally) patterns in the addends.
- Busquemos patrones y usémoslos como ayuda para sumar hasta 20.
Required Materials
Activity 2
Activity 3
Required Preparation
- Create a set of cards from the blackline master for each group of 3.
- Gather materials from previous centers:
- Shake and Spill, Stages 3–5
- Compare, Stage 1
- Number Puzzles, Stages 1 and 2
Suggested Centers
NoneTeacher Reflection Questions
As students worked in their small groups today, whose ideas were heard, valued, and accepted? How can you adjust the group structure tomorrow to ensure each student’s ideas are a part of the collective learning?