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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.

Backyard Graphing
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In this math activity, learners will create a scale diagram of their backyard or other outdoor area on graph paper.
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.

Paper Puzzle
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In this math activity, challenge learners to make two equal rows from eight different paper strips. Learners can explore the many ways they can solve this problem.
Shape & Solid Exploration
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In this game, learners use clues to identify mystery shapes. Use everyday objects (like from the pantry) as the shapes.

Number Sense and Computation: To Half or Half Not
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In this math lesson, learners use slices of bread and geoboards to explore several ways to divide a rectangle in half. Learners also identify equivalent fractions that represent one-half.
Measuring Rules
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In this math activity, learners create their own units of measurement by making noodle rulers. Learners practice estimating and measuring objects using the noodle rulers .
Stack-o-Pennies Shop
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In this math activity, learners pretend there is a special store that lets you pay for toys by their height in pennies.
Breakfast Sweets
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In this math activity, learners guess which cereals contain the most sugar. Learners use the nutrition labels on the cereal boxes to find the cereal with the least amount of sugar.

Jump Like a Frog
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In this math activity, learners jump and measure how far they can jump on different surfaces using different jumping techniques.

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.

Blazing the Trail
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In this math lesson, learners estimate distances between landmarks and use a map and scales to determine the actual distances.

Patterns and Functions: Fill 'er Up
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In this math lesson, learners predict, interpret, and sketch graphs of functions related to the shapes of bottles. A measure of water is poured into a container.
Any Year Calendars
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This PDF contains 12 calendars (12 months). Each month contains activities about math. Things to do on familiar holidays (like July 4), less common holidays (like Backward Day), and any day.

The Thousand-Yard Model
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This is a classic exercise for visualizing the scale of the Solar System.

Rates of Change: Bottles and Divers
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In this math lesson (page 2 of the PDF), learners use bottles of various shapes to explore the abstract concept of rate of change.

Statistics: Whirlybirds
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In this math lesson, learners measure, predict and determine the frequency of an event as it relates to how close Whirlybirds land to a target.
Read the Label: Nutrition and Percentage
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This activity combines learning about nutrition, math of measurement and proportion, and healthy eating. Start by distributing food packages with Nutrition Facts labeled.

Linear Functions: Mystery Liquids
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In this math lesson, learners analyze the density of liquids in order to explore linear functions.

Pico Cricket Compass
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Learners can program a compass to draw a circle by itself using a Pico Cricket, some Legos, and lots of tape! Pico Cricket is required.