# ALEX Lesson Plan Resources

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ALEX Lesson Plans
Thinkfinity Lesson Plans
Subject: Mathematics
Title: Vigenere Cipher: Student Reproducible      Add Bookmark
Description: This reproducible worksheet, from an Illuminations lesson, poses several questions to students about the Vigenere cipher, which is a more complex form of the Caesar cipher.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Description: In this unit of two lessons, from Illuminations, students learn about two simple coding methods, the Caesar cipher and the Vigenere cipher. Students then use matrices and their inverses to create more sophisticated codes.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Description: This unit of two lessons, from Illuminations, focuses on combinations, a subject related to the probability-and-statistics strand of mathematics. Students are encouraged to discover all the combinations for a given situation using problem-solving skills (including elimination and collection of organized data) and drawing conclusions. The use of higher-level thinking skills (synthesis, analysis, and evaluations) is the overall goal.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Description: This Illuminations lesson demonstrates the birthday paradox, using it as a springboard into a unit on probability. Students use the TI-83 graphing calculator to run a Monte Carlo simulation with the birthday paradox and engage in a graphical analysis of the birthday-problem function.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: Stick or Switch?      Add Bookmark
Description: This lesson, from Illuminations, presents a version of a classic game-show scenario. You pick one of three doors in hopes of winning the prize. The host opens one of the two remaining doors, which reveals no prize, and then asks if you wish to stick or switch. Which choice gives you the best chance to win? Students explore different approaches to this problem including guesses, experiments, computer simulations, and theoretical models.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: Sticks and Stones Demo      Add Bookmark
Description: This student interactive, from an Illuminations lesson, allows students to generate random throws for the game '' Sticks and Stones.'' In the game, three sticks are tossed and a player moves his or her marker according to how the sticks land.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: Sticks and Stones      Add Bookmark
Description: In this Illuminations lesson, students play Sticks and Stones, a game based on the Apache game Throw Sticks, which was played at multi-nation celebrations. Students collect data, investigate the likelihood of various moves, and use basic ideas of expected value to determine the average number of turns needed to win a game.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Description: In this Illuminations lesson, students investigate the famous Traveling Salesman Problem by considering the shortest route between five northeastern cities. Three different algorithms for finding the shortest route are explored, and students are encouraged to look for others.
Thinkfinity Partner: Illuminations

Subject: Mathematics