Unit A Measurement & Shapes

Lesson 1: Rulers, Lengths, and Partner Lengths

Vocabulary: Length Centimeter Line segment Horizontal Vertical Partner lengths

Vocabulary: Line: is a straight path that goes on forever in both directions. Line Segment: A part of a line. A line segment has two endpoints. Endpoints: where a line ends

Lines, Line Segments, Endpoints line Line segment endpoint

Review: Terms Line Segments Do you remember?

Centimeter Ruler

Lesson 2: Squares, Rectangles, and Triangles

Squares Square: is a shape with four equal sides and four square corners

Rectangles Rectangle: is a shape with opposite sides that are equal in length and four square corners.

triangles Triangle: is a shape with three corners and three straight sides.

Vocabulary Plane: a flat surface that extends without end Congruent: exactly the same size and shape

Vocabulary Line symmetry: a figure has line symmetry if it can be folded along a line to create two halves that match exactly. Line of symmetry: a line that divides a figure into two congruent parts.

GLE30. Make and test predictions regarding transformations (i.e., slides, flips, and turns) of plane geometric shapes (G-3-E) Reflection: a transformation that flips a figure onto a congruent image. Sometimes called a flip.

GLE30. Make and test predictions regarding transformations (i.e., slides, flips, and turns) of plane geometric shapes (G-3-E) Translation (slide): To translate an object means to move it without rotating or reflecting it. Every translation has a direction and a distance.

GLE30. Make and test predictions regarding transformations (i.e., slides, flips, and turns) of plane geometric shapes (G-3-E) Rotation (turn): To rotate an object means to turn it around. Every rotation has a center and an angle.

Vocabulary: Line: is a straight path that goes on forever in both directions. Line Segment: A part of a line. A line segment has two endpoints. Endpoints: where a line ends

Lines, Line Segments, Endpoints line Line segment endpoint

Vocabulary: Ray: part of a line that has one endpoint and extends without end in one direction. Angle: a figure formed by two rays with the same endpoint. vertex

Parallel Lines and Perpendicular Lines Parallel LinesPerpendicular Lines

Review: Terms Line Segments Do you remember?

Lesson 3: Kinds of Quadrilaterals

These geometric figures are called Quadrilaterals. These get their name because they have four quad-) sides (-lateral). Students will learn about four different kinds of quadrilaterals in this unit.

Can you name the properties of these shapes

Parallelogram A quadrilateral with both pairs of opposite sides parallel

Squares and Rhombuses Square: is rectangle with sides that are all the same length Rhombus: is a parallelogram with sides that are all the same length.

Rectangles A rectangle is a parallelogram with adjacent sides that are perpendicular (or with four square corners). Rectangles are special kinds of parallelograms!

Special Quadrilaterals A parallelogram has two parallel pairs of opposite sides. A rectangle has two pairs of opposite sides parallel, and four right angles. It is also a parallelogram, since it has two pairs of parallel sides. A square has two pairs of parallel sides, four right angles, and all four sides are equal. It is also a rectangle and a parallelogram. A rhombus is defined as a parallelogram with four equal sides. Is a rhombus always a rectangle? No, because a rhombus does not have to have 4 right angles. Trapezoids only have one pair of parallel sides. It's a type of quadrilateral that is not a parallelogram. (British name: Trapezium)

We can use a Venn diagram to help us group the types of quadrilaterals.

Lesson 4: Perimeter and Area of Rectangles

Find Perimeter of a Rectangle Measure each side Find the length of each side and then add the four lengths. Length + Width + Length + Width = Perimeter length width length

Find the area of a rectangle Measure each side width length Find the length of each side and then multiply the length times the width. Length x Width = Area

Lesson 5: Perimeter and Area of Parallelograms

Find Perimeter of a Parallelogram Measure each side Find the length of each side and then add the four lengths. base + slant height + base + slant height = Perimeter Or (base + slant height) x 2 = perimeter Or (base x 2) + (slant height x 2) = perimeter base Slant height

Find area of a Parallelogram Find the length of the base and the height. Base X Height = Area

Lesson 6: Perimeter and Area of Complex Figures

Online Fun and Practice click on the link!