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Breaking the Code: Mayan Math
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This is a lesson plan for an activity in which learners, playing the role of archeologists, use math concepts about number bases to decipher the Dresden Codex, an ancient Mayan document.
Number Flips
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In this math activity, learners play a number game to explore the relationships between numbers, combinations, and the concept of equivalency.

Decoding Machine
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In this math lesson, learners explore variables and their uses.

Number Systems and Number Theory: Factor Game
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In this math lesson, learners play a game to identify the properties of prime, composite, abundant, deficient and perfect numbers.
Frustrations with Fractions
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In this math activity, learners make a set of fraction cards to play a game that will help relieve their fraction frustrations.

In the Middle
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In this math activity, learners use problem solving skills to find a middle seat for Mary at the movies. Learners practice dividing numbers and identifying the middle of a quantity.

Odd Man Out
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In this math game (Page 14 of the Are You Game? PDF), learners determine the probability of getting an even versus an odd product using the numbers on a regular deck of cards.

Strike 'em Down & Add 'em Up!
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In this activity, reuse two-liter bottles to create bowling pins. Learners practice math skills and develop a concept of verifying answers, while bowling and keeping score.

Stairway to the Sky
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In this math activity, learners use cubes to calculate how many blocks it would take to build stairways with different heights.

Tossing Coins
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In this math game (Page 17 of the Are You Game? PDF), learners investigate probability by tossing coins.

Copy Cats
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In this math activity, learners use what they know about shapes to copy a friend's hidden picture. Learners create a design out of pattern blocks and then hide their picture behind a screen.
Magic Turtle Squares
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In this math activity, learners create a magic turtle where all the rows, columns and diagonals add up to fifteen.
Race to the Dollar
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In this math activity, learners play a card game to practice adding coins quickly, just like a banker. First, learners create coin cards. Next, the cards are dealt to each player.
Peppy's Day in the Park
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In this math activity, learners build Peppy the dog the best trail and park for running around.

Mountain Rescue Mission
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In this math activity, learners play a game that helps reinforce learners' understanding of the coordinate system.
Tip Topper
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In this math activity, learners role-play as wait staff at the Kidtropolis Diner. It's the end of the night and it's time for the staff to collect their tips.

Subtracta's Dog
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In this math activity related to volume, learners use problem solving skills to calculate and build a model house for Minus the dog.

Measurement: How Many Noses Are in Your Arm?
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In this math lesson, learners apply the concepts of ratio and proportion to determine the length of the Statue of Liberty's torch-bearing arm.

Fantastic Fractions
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In this math lesson, learners compare pattern blocks to visually understand halves, thirds, and sixths.

By the Numbers
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Learners describe objects in a room using only numbers and shapes. They can measure the object (like a desk) and make a list of facts about it (e.g.