Refer to our Texas Go Math Grade 1 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 1 Lesson 15.1 Answer Key Two-Dimensional Shapes on Three-Dimensional Solids.

## Texas Go Math Grade 1 Lesson 15.1 Answer Key Two-Dimensional Shapes on Three-Dimensional Solids

**Explore**

Use a cone.

FOR THE TEACHER • Read the following problem, and have children use the workspace to act it out. Lee places a cone on a piece of paper and draws around its flat surface. What does Lee draw?

Answer: Lee draws a flat surface with the help of a cone

**Math Talk**

**Mathematical Processes**

What other solid could you use to draw the same kind of picture? Explain.

Answer: A cylinder also has two flat surfaces, so the other solid object can be used is a cylinder to draw a flat surface like the cone.

**Model and Draw**

Trace around the flat surfaces of the three-dimensional solid to find the two-dimensional shapes.

Answer:

**Share and Show**

**Use three-dimensional solids. Trace around the flat surfaces. Circle the shapes you draw.**

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

**Problem Solving**

**Circle the objects you could trace to draw the shape.**

Question 4.

Answer:

Question 5.

Answer:

Question 6.

**H.O.T.** Circle the solid that the pattern will make if you fold it and tape it together.

Answer: Cube will be formed if we fold the pattern and tape it together.

Question 7.

**H.O.T. Multi-Step** Draw two different shapes you could make if you traced this solid.

Answer:

Tracing triangular prism we can draw 2 different shapes which are a triangle and a rectangle.

**Daily Assessment Task**

**Choose the correct answer.**

Question 8.

Carl buys a toy for his cat. The top and the bottom of the toy looks like this. Which shows the shape of the toy?

Answer:

In cylinder shape both top and bottom is having flat surfaces, Carls buys a cylidrical shaped toy for his cat.

Question 9.

Analyze Donna buys a toy for her dog. Only the bottom of the toy looks like this. Which shows the shape of the toy?

Answer:

Cone is having only one flat surface, Donna buys a cone shaped toy for her dog.

Question 10.

**Multi-Step** Judy traces two sides of a solid. Draw the solid that she uses. Explain how you know that your answer is reasonable.

Answer:

Question 11.

**Texas Test Prep** Which flat surface does a cube have?

Answer: Cube has square shaped flat surface

**TAKE HOME ACTIVITY** • Collect a few three-dimensional objects that are shaped like spheres, cones, cylinders, and cubes. Ask your child what two-dimensional shapes are on those objects.

Answer: Three dimensional objects that are shaped like: sphere, cone, cylinder and cube.

### Texas Go Math Grade 1 Lesson 15.1 Homework and Practice Answer Key

**Look at the three-dimensional solid. Circle the shapes you would draw if you traced around the flat surfaces.**

Question 1.

Answer:

Cube has a flat squared surfaces.

Question 2.

Answer:

Cylinder has 2 flat surfaces, one at the top and second at the bottom.

**Problem Solving**

Question 3.

Draw a shape you could make if you traced this cube.

Answer:

**Lesson Check**

**Choose the correct answer.**

Question 4.

Maggie bakes a cake. The top and the bottom of the cake look like this. Which shows the shape of the cake?

Answer:

Cake has flat surface both at the top and bottom.

Question 5.

**Multi-Step** Michael makes a board game in the shape of a rectangle. He traces around two faces of a solid. Which solid does he trace?

Answer:

A cuboid has rectangular faces.

Question 6.

Which flat surface does a cone have?

Answer: Cone has flat surface at the bottom