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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.

In this art/science/math activity, young learners are introduced to the concept of symmetry in nature.

In this math puzzle game, learners work together to use algebraic reasoning and fun clues for solving word puzzles.

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

In this math activity, learners make and explore patterns using the letters in their names, a grid, and some colors.

In this math activity, learners observe and sketch cracking patterns in pavement.

In this math activity, learners use a "function machine" to collect and organize simple data. The function machine in this case is a cardboard box and the input/output data are paper fish.

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.

In this math activity, learners make toothpick designs by following simple patterns.

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

In this math activity, learners guess a secret number between 1 and 100 in a three-player game.

In this math activity, learners create a magic turtle where all the rows, columns and diagonals add up to fifteen.

In this math activity, learners play a game similar to 20 Questions, in which learners must identify a secret number drawn from a bag.

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.

In this math activity, learners play a game and identify patterns with fun moves and sounds. Discover how dancing and signing involve patterns.

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.

In this math activity, learners find patterns in telephone numbers.

In this math lesson, learners explore linear patterns, write a pattern in symbolic form, and solve linear equations using algebra tiles, symbolic manipulation, and a graphing calculator.

In this two-part math lesson, learners investigate problems that foster algebraic thinking across content strands. In the first part, learners explore even and odd numbers linked to quilts.

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