7.1

=7.1 Secret Codes part one=

This is a two-period lesson or a one-block lesson. The main point of this lesson is to have the kids understand the concept of FUNCTION...each input has only one output.

Students use a LETTER-SHIFT CODE to create and decode secret messages. The important part of a letter-shift code is that it is not random like a wuzzle or a crypto-graph that you might find in the newspaper. So, it is much easier to break the code.

What you will need: 1) The smartboard lesson: [|7.1_SecretCodes_SmartLesson.notebook]. If you like to put a PDF on your wiki for kids to access: [|7.1_SecretCodes_PDF_Lesson.pdf] 2) A copy of the investigation: [|Algebra_7.1_SecretCodes.docx] 3) Sticky notes or scratch pieces of paper for students to share and decode their secret messages - 2 per student 4) Homework worksheet - When you print this worksheet, make two sheets per page and cut in half to save paper. [|Homework_7.1_SecretCodesHalfSheet.pdf] 5) Answer Key to homework - [|Homework_7.1_AnswerKey.pdf] 6) A website that might help students who are struggling with what a function is:[]

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