# Audience: 1st - 2nd

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Audience
• 1st - 2nd (2)
• 3rd - 5th (10)
• 6th - 8th (28)
• 9th - 12th (27)
• College Level (18)
• For Teachers (25)
Topics
Topics
• Algebra / Arithmetic (33)
• Combinatorics (8)
• Geometry (10)
• Mathematical Games (8)
• Mathematical Modeling (5)
• Number Theory (14)
• Parity / Invariants (1)
• Problem Solving / General (13)
Supporting Materials
Supporting Materials
• Facilitator Guides (30)
• Featured in MCircular (6)
• Handouts (13)
• Lesson Plan (3)
• Photos & Videos (11)
• References (9)
• Virtual Tools (3)
Session Styles
Session Styles
• Integrates Technology (4)
• Kinesthetic Element (4)
• Manipulatives (12)
• Multiple Representations (8)
• Problem Posing (17)
• Problem Sets (19)
• Try a Smaller Problem (13)
• Work Backwards (8)
Mathematical Practices
Mathematical Practices
• MP1 - Make sense of problems and persevere in solving them. (31)
• MP2 - Reason abstractly and quantitatively. (17)
• MP3 - Construct viable arguments and critique others' reasoning. (17)
• MP4 - Model with mathematics. (20)
• MP5 - Use appropriate tools strategically. (18)
• MP6 - Attend to precision. (13)
• MP7 - Look for and make use of structure. (22)
• MP8 - Look for and express regularity in repeated reasoning. (23)

### Fold & Cut

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What shapes can result from the following fold-and-cut process?
Take a piece of paper.
Fold it flat.
Make one complete straight cut.
Unfold the pieces.
Are all shapes possible?

### Cup Stacking

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Begin with a row of cups and end with all of the cups in a single stack. Rules: 1. Count the number of cups in a stack. That stack must jump that number of spaces. For example, 1 cup can only move 1 space; 2 cups have to move 2...

### Balance Beans

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If you start with some beans on a seesaw and you’re given certain additional beans to place on the seesaw, can you do it so the seesaw balances? In this activity, students start by trying to solve various challenges involving different arrangements of beans on the seesaw and then design...

### Locked Out: A Breakout Box Session for Your Circle

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Escape Rooms and “Bomb Disposal” activities are growing in popularity as a form of team building and entertainment. This session blends the two ideas to create a cooperative math activity where the challenge is to solve math problems whose solutions generate combinations to open a locked box. The math problems...

### The Dollar Game

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A group of people, some that just met, have a dilemma. Some people owe money and some have money. Problem is that only people that know each other, connected by nodes, can give or lend a dollar. But they must give each person they know a dollar, even if that...

### Wolves and Sheep

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The rules are simple: you want to place the sheep on the board so that the wolves can’t eat them. A wolf can eat a sheep if it has a direct path to it – or is in same row, column, or diagonal as that sheep. Can you place all...

### Queen’s Move

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Students will explore a game between two players moving a chess Queen from place to place on a square grid. The Queen may move any number of spaces to the left, any number of spaces downward, and any number of spaces on the downward-left pointing diagonal. Each player takes turns...

### Bubbling Cauldrons

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Place our numbers into the cauldrons in ascending order – you can choose which cauldron each one goes in. However, if two numbers in one cauldron add up to a third number in that same cauldron, they bubble up and cause an explosion! This means that all the numbers, leave...

### Monty Hall Problem

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A prize is hidden behind one of three doors. You choose the door where you think the prize is hidden. But before the door is opened, one of the other 2 remaining doors is opened to reveal no prize. You can choose to keep the door you chose earlier or...

### Humans, Zombies, & Other Problems Crossing the River

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A town faces an epidemic of zombies! Luckily, the virus has just started to spread and the infected are able to stave off their hunger for human brains… for now. In fact, they’re willing to work alongside the remaining humans to help them get across a river to safety. Can...