# Selected Online Math Activities

***Starred sites were selected as top choices by the Math Camp Program Assistant.***

#### ALGEBRAIC THINKING

Algebra Puzzle
Find the value of each of the three objects presented in the puzzle by examining the relationships among the objects.

Algebraic Reasoning
Find the value of a given object based on the information provided by two scales.

Function Machine
Explore the concept of functions by putting values into this machine and observing their output.

Multiplying Binomials – 1
Visualize multiplying and factoring algebraic expressions using tiles.

Seesaw Logic
Use the seesaw balance to compare the mass of different shapes.

Weigh the Wangdoodles
Find the weight of each Wangdoodle using the information provided by the scales. To be successful, you will have to make sure that the weight you assign to each Wangdoodle works on each scale.

#### DATA ANALYSIS & PROBABILITY

Test probability with a spinner.

Coin Flips
Explore probability with a coin flip.

Hamlet Happens
Verify that rare events happen by drawing letters from a box.

Racing Game with One Die
Play a probability game that involves rolling a die.

Stick or Switch
Investigate probabilities of sticking with or switching a decision.

#### GEOMETRY & MEASUREMENT

Area Explorer

Compare the relationship between area and perimeter through graphing.

Use turns and steps to program a ladybug to hide behind a leaf.

Pool Geometry 2
Use angles to play pool.

Surface Area and Volume
Manipulate three-dimensional polyhedra to experiment with surface area and volume.

Tiling with Triangles
Create tilings or tessellations of a plane (covering a plane with repeating shapes, leaving no gaps).

Turtle Geometry
Explore numbers, shapes, and logic by programming a turtle to move.

#### PROBLEM SOLVING & REASONING

***Crossing the River***
Sailor Cat needs to bring a wolf, a goat, and a cabbage across the river.

Colors Game
Move colored chips of the same color in lines of 5 to earn points.

Hexagons
Use the least number of moves to unscramble the numbers.

Triangles
Use the least number of moves to unscramble the numbers.

#### SPATIAL SKILLS

***Traffic Jam Game***
Help the red car get out of a jammed parking lot with the least number of moves.

Count the Cubes
Develop a strategy to count the number of cubes that appear in each 3-d structure.

Gems Twist
Rotate shapes to place them with their “own kind.”

Maze Race 2
Move the red ladybug through a maze to get it to food before the green one gets there.

OBBL Architecture Blocks
Create pictures using architectural blocks, but watch out because they don’t stay in one place.

Pentominoes
Use the 12 pentomino combinations to solve problems.

Polygon Playground
Explore symmetry, tessellations, patterns, and more by dragging around various polygons.

Shape Inlay
Quickly place 2-d tiles to fill the shape's outline.

Tangrams
Use all seven Chinese puzzle pieces to make shapes and solve problems.