Secret+Codes

=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:[] =7.1 Secret Codes part two= The main object of this lesson is to wrap up functions and relations.

Lesson: [|7.1_SecretCodesPart2_SmartLesson.notebook] PDF version of the lesson: [|7.1_SecretCodesPart2_PDF_Lesson.pdf]

Homework (in doc, docx and pdf) - I am going to print on half sheets and give out. [|Homework_7.1Part2.doc] [|Homework_7.1Part2.docx] [|Homework_7.1Part2.pdf]

here's a key to the HW...but i doubt the kids will get the last one...i think it should've said a "one-letter shift code"...

[|7.1part2HWKey.pdf]

1) Range = SBOHF Domain = EPNBJO Function = GVODUJPO 2) NO ~ There are some inputs that have more than one output 3) Domain: {0, 1, -1, 2, -2}. Usually, you will see the domain and range in number order, so another answer is {-2, -1, 0, 1, 2} Range: {0, 1, 2} Function? Yes!
 * The Answer Key to the homework**

Domain of the second one: {1, 4, 9} Range of the second one: {-1, 1, -2, 2, -3, 3} or, in order: {-3, -2, -1, 1, 2, 3} Function? NO!

4) The answer to this question depends on your name. So, my name would be: ZMMRV VEZMH. 5) This is the hardest question of them all! The answer is SECRET CODES