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# Geometry

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### Angles

- Lesson plan -

Identify angles as right, less than a right angle or greater than right angle.

### Line Symmetry

- Lesson plan -

Identify and draw lines of symmetry in two-dimensional shapes.

### Sorting by multiple attributes

- Lesson plan -

Sort items by multiple attributes, or combine attributes to form items in a matrix.

### Coordinate system

- Activity -

Students learn to name coordinates by studying the grid.

### Distributive Property

- Activity -

Use tiling to show in a concrete case that the area of a rectangle with whole-number side lengths a and b + c is the sum of a x b and a x c.

### Construction With Parts

- Activity -

Practice construction by matching the correct parts with a 3d object.

### Map Location

- Activity -

Practice spatial skills by finding the correct image that is taken on a map.

- Lesson plan -

Classify quadrilaterals by their sides and by their angles.

### Triangle Classification

- Lesson plan -

Identify, define, describe, and accurately represent triangles.

### Exploring Symmetry

- Lesson plan -

Classify plane figures according to types of symmetry (line, rotational).

### Angle Properties

- Lesson plan -

Identify, estimate, and measure the angles of plane figures using appropriate tools.

### Units of Measure

- Lesson plan -

Identify, estimate, and measure the angles of plane figures using appropriate tools.

### Area

- Lesson plan -

Find the areas of squares, rectangles, parallelograms and triangles.

### Perimeter & Area of Irregular Figures

- Lesson plan -

Find the perimeter and area of irregular figures. Estimate the perimeter and area of irregular figures.

### Solid Figures

- Lesson plan -

Identify solid figures including prisms, pyramids, cones and spheres. Identify the nets of solid figures.

### The Coordinate Plane

- Lesson plan -

Use the coordinate system to describe the location and relative position of points and draw figures in the first quadrant.