Learning Outcomes:

At the end of the lesson, students will be able to: 1. Demonstrate the columns method for adding two-digit numbers. 2. Add two-digit numbers up to 20.

Materials: -Whiteboard and markers -Student worksheets -Example calculations

Lesson Plan:

I. Introduction (5 minutes) A. Teacher will draw a grid on the whiteboard, divided into two columns (1st and 1st). - The columns method is a way to represent and calculate adding two numbers together. The grid will help students visualize the process step by step.

B. Teacher will briefly explain the concept of carry over in adding two-digit numbers.

C. Teacher will quickly review tens and ones.

II. Guided Practice (10 minutes) A. Teacher will demonstrate how to calculate an addition problem using the columns method. - Example: 12 + 8

B. Teacher will ask students to come up to the whiteboard and show how to solve the problem with the columns method.

III. Independent Practice (15 minutes) A. Teacher will pass out worksheets with multiple addition problems that use two-digit numbers up to 20.

B. Students will work on the problems independently.

IV. Conclusion (5 minutes) A. Teacher will have one or two students come up to the board to demonstrate the solution of an addition problem. B. Teacher will review the concept of ten and ones and how the columns method ensures that it is used in an addition problem.

==

Assessment:

Students will be assessed on their comprehension of the task through a quiz. The quiz will contain a mix of multiple choice and open response questions that cover all of the lesson objectives. The quiz demonstrate students’ ability to accurately add two-digit numbers up to 20 using the columns method.