Learning Intention: Students will be able to add two-digit numbers within 20.

Objectives: 1. Students will be able to explain what it means to add two-digit numbers. 2. Students will be able to use mental strategies to add two-digit numbers within 20. 3. Students will be able to demonstrate their understanding of two-digit addition.

Materials Needed: - Math manipulative (e.g. base 10 blocks, math dice, etc.) - Whiteboard and markers - Worksheets/paper

Lesson Plan: 1. Introduction (5 minutes): Introduce the lesson objectives and explain what it means to add two-digit numbers within 20. - What is the definition of addition? What does it mean to add two-digit numbers? 2. Guided Practice (15 minutes): Provide the students with math manipulatives and model the addition problem using the blocks. Show students how to add two-digit numbers using mental strategies (e.g. breaking the problem into smaller ones, using place value, etc.). 3. Independent Practice (15 minutes): Provide students with worksheets containing two-digit addition problems. Ask students to work individually to complete the worksheets. Monitor and provide additional help as needed. 4. Closure (5 minutes): Ask students to share their answers and explain their strategies. Wrap up discussion by asking students to summarize the main points that were discussed. 5. Assessment: To assess students’ understanding, have them complete an exit ticket or short quiz. - Ask student to answer the equation “14 + 6 = __”