## Geometry

Attribute Blocks Sort shapes using color, shape, and size
Attribute Trains

Complete patterns of shapes, numbers, or colors

Attribute Trains

Complete patterns of shapes, numbers, or colors

Cob Web Plot Explore the Verhulst diagram
Color Patterns Recognize, describe, and extend color patterns
Congruent Triangles Construct triangles from various combinations of sides and angles (SSS, SAS, ASA, SSA)
Counting All Pairs Plot points on a coordinate grid
Fractals-Iterative Draw any of 6 iterative fractals
Fractals-Koch and Sierpinski Explore the Koch snowflake and the Sierpinski carpet fractals
Fractals-Mandelbrot and Julia Sets Explore the Mandelbrot and Julia sets
Fractals-Polygonal Draw polygonal fractals
Geoboard Color and make specific shapes
Geoboard Subdivide, combine, and transform shapes using a geoboard
Geoboard-Circular Draw and compare two-dimensional shapes using a circular geoboard
Geoboard-Circular Construct central angles and find the measures of each angle in a triangle using a circular geoboard
Geoboard-Coordinate Find the slope of a line
Geoboard-Coordinate Use a coordinate grid to locate shapes in two dimensions
Geoboard-Coordinate Explore inscribed parallelograms
Geoboard-Isometric Construct three-dimensional shapes
Golden Rectangle Explore the golden ratio
Ladybug Leaf Use action buttons to direct a ladybug to a leaf
Ladybug Mazes Use action buttons to direct a ladybug through a maze
Pattern Blocks Create various patterns of shape, including symmetrical patterns
Pentominoes Explore the perimeter of different pentominoes
Pentominoes Make different figures using pentominoes, including congruent figures
Pinwheel Tiling Manipulate right triangles to make Pinwheel Triangles
Platonic Solids Manipulate solid figures to identify the number faces, vertices, and edges; explore Euler's Formula
Platonic Solids Explore Euler's Formula
Platonic Solids-Duals Manipulate five different dual platonic solids
Platonic Solids-Slicing Visualize the intersection of a plane figure with a solid figure
Polyominoes Create patterns and explore creating different shapes with squares
Pythagorean Theorem Explore two proofs of the Pythagorean Theorem
Space Blocks Construct figures with a given surface area
Space Blocks Match nets with the appropriate solid figure
Tangrams Build different shapes from a tangram
Tessellations Form tessellations using different shapes
Tight Weave Explore Sierpinski Carpet
Transformations-Composition Explore the effect of two transformations of a figure
Transformations-Dilation Create figures with pattern blocks and explore dilations
Transformations-Reflection Create figures with pattern blocks and explore reflections
Transformations-Rotation

Create figures with pattern blocks and explore rotations

Transformation-Translation

Create figures with pattern blocks and explore translations

Turtle Geometry

Use action buttons to direct a turtle to a given destination

Turtle Rectangles Explore the commands to draw different rectangles