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Welcome to Thinkport’s Student Activity Center! Your teacher has directed you to this student activity to help you learn more about the topic you are studying.
Title: The Secret Message
Audience: Elementary
Duration: 45 minutes
Subject Area(s): Mathematics
Grade Level(s): 1
Student Directions: You are on a mission. You must solve a secret code in order to read a secret message. In this activity, combine the fun of being a detective while reviewing and practicing strategies used in order to solve addition number sentences.
The Students will: Utilize a variety of strategies to find a missing number in a number sentence.
Directions: To begin, download the PowerPoint Questions worksheet. You will complete this worksheet while viewing the Secret Code PowerPoint below. You will use a variety of strategies to solve the addition problems. You can use subtraction, manipulatives, and/or draw pictures in order to solve the math problems.
PowerPoint Questions worksheet (View)
The Secret Message PowerPoint Presentation (View)
Directions: After viewing the PowerPoint presentation and answering the questions, you will complete the Secret Message worksheet below. You will use the answers to the math problems and the worksheet, The Code, to find the letters which will solve the secret message.
The Secret Message worksheet (View)
Directions: You will use this worksheet to find the letters that match the answers to the math problems.
The Code handout (View)

Author: Megan E. Wheatley
Modified by: Amy Whitney
Author's School System: Baltimore City Private Schools
Author's School: Bryn Mawr School The
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