Understanding Area and Reference Materials

The video tutorial covers Standard 79c, focusing on determining the area of composite figures. It emphasizes the importance of using Grade 7 mathematics reference materials, which include formulas for various shapes. Some formulas, like those for semicircles and quarter circles, are not provided and must be known by students. The tutorial also provides guidance on printing reference materials correctly. An example problem from the 2016 STAR test is solved, demonstrating how to calculate the area of a shaded region by subtracting the area of a smaller rectangle from a larger one.

What is the main focus of Standard 79c?

• Determining the area of composite figures

• Understanding the volume of 3D shapes

• Learning about angles in polygons

• Calculating the perimeter of composite figures

Which shapes are included in the composite figures for Standard 79c?

• Rectangles, trapezoids, and semicircles

• Parallelograms, ellipses, and octagons

• Squares, triangles, and pentagons

• Rectangles, circles, and hexagons

Why is it important for students to be familiar with the STAR grade 7 mathematics reference materials?

• They contain historical data

• They provide necessary formulas and tools

• They offer tutoring services

• They include practice tests

What tools are included in the reference materials for measuring dimensions?

• Scale and thermometer

• Graph paper and calculator

• Inch and centimeter rulers

• Protractor and compass

Which formula is not provided in the reference materials?

• Area of a square

• Area of a rectangle

• Area of a trapezoid

• Area of a triangle

How do you calculate the area of a semicircle?

• Multiply the area of a circle by 2

• Multiply the area of a circle by 1/2

• Multiply the area of a circle by 3/4

• Multiply the area of a circle by 1/4

What should you ensure when printing the reference materials?

• Print in black and white

• Use a high-quality printer

• Print on both sides of the paper

• Choose 'actual size' for scaling

Where can you find the reference materials for the STAR test?

• At the local bookstore

• In the math textbook

• On the TEA website

• In the school library

What is the first step in solving the sample problem from the STAR test?

• Convert measurements to centimeters

• Measure the dimensions of the rectangles

• Calculate the area of the shaded region

• Draw a diagram of the figure

How is the area of the shaded region determined in the sample problem?

• By multiplying the areas of two rectangles

• By subtracting the area of the smaller rectangle from the larger one

• By adding the areas of two rectangles

• By dividing the area of the larger rectangle by the smaller one