Standard: G.1

Teaching Point(s): By the end of the lesson students will be able to identify the

properties of quadrilaterals (rhombus, square, trapezoid, and rectangles.)

 

Math Message29. Round 6.525 to the nearest tenth.

 A. 6.25

 B. 6.5

 C. 6.53

 D. 6

Discovery Education VideoDiscovering Math: Grades 03-05: Geometry

Quadrilateral- Four sided polygon

- Inner angles sum is 360°

- Can be different sides and shapes

1

2

3

4

90° 90°

90° 90°

90°+ 90° + 90° + 90°= 360°

The rhombus is a quadrilateral with all sides equal in length.

The opposite sides are parallel. The rhombus has 2 obtuse and 2 acute

angles.

Rhombus

A

B

C

D

Squareit has four equal sides and four equal angles

(90 degree angles, or right angles).2 parallel sides4 Perpendicular lines

B

A

C

D

RectangleAll angles are 90 degrees (perpendicular). Opposite sides are equal in length. Opposite sides are parallel.

90° 90°

90° 90°

A

B

C

D

TrapezoidHas four sidesOne pair of opposite sides are parallel

A

B

C

D

A

B

C

D

Group WorkWith your partner describe the properties of

quadrilaterals . Develop a way of telling another student about

the properties of quadrilaterals.Make sure you tell everything about each

quadrilateral.

Independent WorkPresent your way of identifying each property

of the quadrilateral to the group.

Exit TicketCompare the properties of a trapezoid and a

rectangle. What is similar, and what is different?

Math Sophistication26. Sue saved her money from her past three birthdays.

She saved $3.75, $12.00, and $7.85.Which is the best estimate of the total amount of money Sue saved?

 A. $21

 B. $22

 C. $23

 D. $24

Math Sophistication3. Ella made 36 cupcakes to sell at a bake sale.

She sold 27 of the cupcakes.What percentage of the cupcakes was sold at the bake sale?

 A. 25%

 B. 50%

 C. 75%

 D. 90%

Math Sophistication32. Solve the following:(7 + 4) × 5 – 2 = ____

 A. 13

 B. 25

 C. 33

 D. 53