2020 Summer School English Mathematics Grade 3 Unit 1 Two-Dimensional ...

2020 Summer School ? English Mathematics ? Grade 3 Week 4 ? Unit 1 ? Two-Dimensional and Three-Dimensional Figures

Lesson 1: I can classify and sort two-dimensional figures.

Let's Review Look at the words and definitions below. Draw a quick sketch to represent these words.

? Attribute: A characteristic or distinctive feature of an object ? Parallel lines: Lines that are always the same distance apart and will never intersect ? Congruent: Figures that have the same size and the same shape ? Side: A line segment connected to other line segments that form a two-dimensional figure ? Vertex: The point where two sides of a two-dimensional shape meet or where the faces of a three-

dimensional figure meet ? Polygon: A closed two-dimensional shape composed of line segments

Let's Learn Together Look at the shapes below. We can sort shapes into categories using a rule.

Set 1

Set 2

Rule: Quadrilaterals

Rule: Not Quadrilaterals

? We can place the rectangle, the trapezoid, and the rhombus in Set 1 because they all have four sides and four vertices.

? We can place the triangle and the pentagon in Set 2 because do not have exactly 4 sides and 4 vertices.

Here is another way we could sort these figures: Set 1

Set 2

Rule: Parallelograms

Rule: Not Parallelograms

? We can place the rectangle and the rhombus in Set 1 because they have two sets of congruent parallel sides. ? We can place the triangle, the trapezoid, and the pentagon in Set 2 because they don't have two sets of parallel

sides.

Your Turn Look at the shapes below. Classify them and sort them based on their attributes.

Images derivative of 1,2,3, Math Fonts with permission

Sort these into two or more sets. Then, write the rules you used to classify them. Use the sentence stems below to explain your thinking. I placed the _____________________________________ in Set 1 because____________________________. I placed the _____________________________________ in Set 2 because ____________________________.

Which of the shapes above can be classified as polygons? Which of the shapes above can be classified as quadrilaterals?

GLOBAL GRADUATE

- State Process Standard - Aligned to Upcoming State Readiness Standard

- State Readiness Standard - State Supporting Standard

? Houston ISD Curriculum 2019-2020 Page 1 of 4

2020 Summer School ? English Mathematics ? Grade 3 Week 4 ? Unit 1 ? Two-Dimensional and Three-Dimensional Figures

Lesson 1: Check for Understanding

1. Claire drew the figures below on her paper.

Figure L

Figure M

Figure P

Figure Q

Read the statements below. Write True or False for each statement and justify your answer.

a. All of the figures are polygons. _______ because __________________________.

b. All of the figures are quadrilaterals. ______ because _______________________.

c. Figure L and Figure M are both rectangles. ______ because ___________________.

d. All of the figures are parallelograms. ______ because _______________________.

2. Manuel drew a design and colored parts of this design. ? He colored all quadrilaterals red. ? He colored all triangles blue. ? He colored all polygons that have more than 5 sides green.

Images by HISD Curriculum using Microsoft? Word

Use pencils or crayons to color the above design the way Manuel did.

GLOBAL GRADUATE

- State Process Standard - Aligned to Upcoming State Readiness Standard

- State Readiness Standard - State Supporting Standard

? Houston ISD Curriculum 2019-2020 Page 2 of 4

2020 Summer School ? English Mathematics ? Grade 2 Two-Dimensional and Three-Dimensional Figures

Lesson 2: I can classify and sort three-dimensional figures.

Let's Review Look at the words and definitions below. Draw a quick sketch to represent these words.

? Three-dimensional figure: A solid figure with three dimensions (length, width, and height) ? Circular Cylinder: Three-dimensional solid that has two circular bases ? Circular Cone: Three-dimensional solid that has one circular base and a vertex on the opposite end ? Sphere: Three-dimensional solid that has no flat surfaces, no edges, and no vertices; it is completely round ? Cube: Three-dimensional solid with six, same-size square faces ? Prism: Three-dimensional solid with two, same-size-&-shape bases at opposite ends and faces that are in the

shape of rectangles ? Pyramid: A solid figure whose base is a polygon, where triangular faces form a common point (vertex) at the apex ? Face: A surface that is a polygon (on a solid)

? Edge: A line segment where two faces of a solid figure meet

Let's Learn Together Look at the figures below. We can sort figures into categories using a rule.

Set 1

Set 2

Images derivative 1,2,3 Math Fonts with permission

Rule: Figures with triangular faces Rule: Figures without triangular faces

? We can place the pyramid in Set 1 because it has triangular faces. ? We can place the sphere, the cone and the cube in Set 2 because do not have any triangular faces.

Here is another way we could sort these figures: Set 1

Set 2

Rule: Figures with faces that are polygons

Rule: Figures that do not have faces that are polygons

? We can place the pyramid and the prism in Set 1 because they have faces that are triangles or rectangles, and triangles and rectangles are polygons.

? We can place the sphere and the cone in Set 2 because they don't have faces which are polygons.

Your Turn Look at the figures below. Classify them based on their attributes. Sort them into two or more sets according to a geometric attribute.

Images by HISD Curriculum are derivative of 1,2,3, Math Fonts with permission

Explain how you sorted these three-dimensional figures using complete sentences.

GLOBAL GRADUATE

- State Process Standard - Aligned to Upcoming State Readiness Standard

- State Readiness Standard - State Supporting Standard

? Houston ISD Curriculum 2019-2020 Page 3 of 4

2020 Summer School ? English Mathematics ? Grade 2 Two-Dimensional and Three-Dimensional Figures

Lesson 2: Check for Understanding

3. Fernando picked some of the figures shown below and sorted them into two groups: ? Solids with at least one rectangular face ? Solids without rectangular faces

Solids with at least one rectangular face

Solids without rectangular faces

Look at the following images. Cut and paste in the diagram above all the figures that correspond to the way Fernando grouped the solids. Hint: Not all figures may fit Fernando's groups.

Images by HISD Curriculum are derivatives of 1,2,3, Math Fonts with permission

GLOBAL GRADUATE

- State Process Standard - Aligned to Upcoming State Readiness Standard

- State Readiness Standard - State Supporting Standard

? Houston ISD Curriculum 2019-2020 Page 4 of 4

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