Lesson 1: Objects In Our World

1. Think about some of the objects that you see around you. What makes one object different than another? If you were thinking that objects have different shapes, you are exactly right!

2. In this lesson we will be learning to describe, name and sort objects called prisms.

3. Geometry is filled with a lot of new vocabulary. For this lesson you will need to understand the following key terms:

• Face: a flat surface of a solid object

• Base: the bottom of a solid object.

• Attributes: Characteristics of an object or a geometric shape. (e.g square bases, rectangular faces, etc.

• Congruent: Exactly equal in size and shape

• Prism: A 3-D object with identical ends, called bases, and flat sides called faces.

• Rectangular Prism- 3-D object that has 6 faces which are rectangles.

• Triangular Prism- 3-D object made of two triangular bases and three rectangular sides.

4. Watch the videos below to learn about how to sort objects according to different attributes.

5. Go to Google Classroom and complete the assignment called, Lesson 1: "Objects in Our World" in the Classwork section under the Math: Geometry Unit.

6. Turn in the assignment for grading.

7. For extra practice work on learning about 3-D Objects go to IXL Math Grade 4 Geometry Section and work on the following: R.1 and R.4

Lesson 2: Constructing Prisms

1. In the last lesson we were learning about triangular and rectangular prisms and how to sort them.

2. In this lesson you will be constructing your own prisms. To construct prisms you will need some modelling clay or play dough which can be homemade or bought at the Dollar Store. I am including an easy recipe for play dough below.

3. Watch the video below where I demonstrate how to construct the following: a cube, a square prism, a rectangular prism, and a triangular prism.

4. Go to Google Classroom and complete the assignment called, Lesson 2: "Constructing Prisms" in the Classwork section under the Math: Geometry Unit.

5. Turn in the assignment for grading.

6. For extra practice work on learning about 3-D Objects go to IXL Math Grade 4 Geometry Section and work on the following: R.1, R.4 and R.5

Lesson 3: Exploring Nets

1. So far in this unit we have been learning about attributes for rectangular and triangular prisms as well as creating our own prisms.

2. In this lesson we will discover how to recognize and construct nets for rectangular and triangular prisms. A net is a pattern that can be folded to form an object. You will find that this unit requires you to develop your spatial reasoning skills. If you like to solve puzzles, you will really enjoy this lesson.

3. Watch the video below that explains what a net is and shows examples of constructing triangular and rectangular prism nets.

4. Go to Google Classroom and complete the assignment called, Lesson 3: "Exploring Nets" in the Classwork section under the Math: Geometry Unit.

5. Turn in the assignment for grading.

6. For extra practice work on learning about nets of 3-D Objects go to IXL Math Grade 4 Geometry Section and work on the following: R.6

Lesson 4: Symmetrical Shapes

1. The next three lessons are about finding lines of symmetry of 2-D shapes.

2. Symmetry is important because it connects mathematics to the real world. Symmetry, in the real world, is expressed in many pieces of art. For example, quilts are highly mathematical in their creation, and depict how symmetry and mathematics are linked to real-life uses.

3. In this lesson you will need to know the difference between symmetrical and non-symmetrical and what is a "line of symmetry".Symmetrical: The same on both sides (Both sides are congruent-- exactly the same in size and shape)Non-symmetrical (asymmetrical): There is something different on one of the sides.Line of Symmetry: Divides a symmetrical shape into 2 congruent shapes

4. Watch the videos below that explain the definitions of symmetrical, non-symmetrical and line of symmetry.

5. Go to Google Classroom and complete the assignment called, Lesson 4: "Symmetrical Shapes" in the Classwork section under the Math: Geometry Unit.

6. Turn in the assignment for grading.

7. For extra practice work on learning about lines of symmetry, go to IXL Math Grade 4 Geometry Section and work on the following: R.26 to R.28.

Lesson 5: Line Symmetry

1. Line Symmetry is found all around us. A great example of line symmetry can be found in quilting patterns. The Star Blanket quilt represents the Planet Venus in the Sky. Watch the video below that explains the importance of the Star Blanket to the First Nation Culture. In the video also watch for lines of symmetry in the star blanket pattern.

2. In this lesson we will be identifying lines of symmetry as well as creating symmetrical shapes with lines of symmetry from folded paper.

3. Watch the video below to see how a symmetrical shape with a line of symmetry can be created using scissors and a folded piece of paper and by using dot paper.

4. Go to Google Classroom and complete the assignment called, Lesson 5: "Line Symmetry" in the Classwork section under the Math: Geometry Unit.

5. Turn in the assignment for grading.

6. For extra practice work on learning about lines of symmetry, go to IXL Math Grade 4 Geometry Section and work on the following: R.26 to R.28

Lesson 6: Sorting by Lines of Symmetry

1. In the last 2 lessons we have been learning about finding lines of symmetry for 2-D shapes.

2. In this lesson you will be sorting shapes according to their lines of symmetry. A shape has symmetry when a line of symmetry can be drawn on it. Some shapes have no lines of symmetry and other shapes have more than one line of symmetry.

3. Remember that a line of symmetry divides a shape into two congruent parts. When the shape is folded along its line of symmetry, the parts match exactly.

4. Watch the video below where you will be learning how to sort shapes according to the number of lines of symmetry.

5. Go to Google Classroom and complete the assignment called, Lesson 6: "Sorting by Lines of Symmetry" in the Classwork section under the Math: Geometry Unit.

6. Turn in the assignment for grading.

7. For extra practice work on learning about lines of symmetry, go to IXL Math Grade 4 Geometry Section and work on the following: R.26 to R.28.