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1 Slide 1 / 117 Slide 2 / 117 2nd Grade Geometry Presentation Slide 3 / 117 Table of ontents Presentation 1 2 Shapes - Sides and ngles - Part 1 2 Shapes - Part 2 Lab: 2 Shapes Lab 3 Shapes - Part 1 3 Shapes - Part 2 Lab: 3 Shapes Lab rawing Shapes Pattern locks Lab: Going Geodesic with Triangles Slide 5 / 117 click on the topic to go to that section Slide 4 / 117 Table of ontents Presentation 2 ividing Rectangles into Rows and olumns - Part 1 ividing Rectangles into Rows and olumns - Part 2 rea Equal Parts - Halves Equal Parts - Thirds Equal Parts - Fourths Equal Parts - Pattern locks Equal Parts - Review rrays Part 1 rrays Part 2 rrays Part 3 rray Word Problems Slide 6 / 117 Standards for Mathematical Practices MP1 Make sense of problems and persevere in solving them. MP2 Reason abstractly and quantitatively. MP3 onstruct viable arguments and critique the reasoning of others. MP4 Model with mathematics. 2 Shapes - Part 1 ngles and Sides MP5 Use appropriate tools strategically. MP6 ttend to precision. MP7 Look for and make use of structure. MP8 Look for and express regularity in repeated reasoning. lick on each standard to bring you to an example of how to meet this standard within the unit. lick to Return to Table of ontents

2 Slide 7 / or 2 imensional Shapes Slide 8 / Shapes lick on the square below to watch a video of 2 shapes What are some 2 shapes you saw in the video? lick here Slide 9 / Shapes Slide 10 / Shapes circle square o you know any other 2 shapes? rectangle triangle oval Slide 11 / Shapes rhombus pentagon Slide 12 / 117 Lines Shapes have either straight or curved lines. straight curved parallelogram hexagon trapezoid

3 Slide 13 / 117 Lines Straight lines that never touch are called parallel lines. Parallel lines Slide 13 () / 117 Lines Straight lines that never touch are called parallel lines. Parallel lines Teacher tes Explain to students that even if the lines aren't touching right now, to be parallel they won't touch if they continue on forever. Slide 14 / 117 Lines t parallel lines Slide 15 / 117 Sides Shapes with straight lines have sides. Each line on the shape is a side. 3 sides 4 sides 5 sides Slide 16 / 117 Sides and ngles Shapes with straight lines have angles. Slide 17 / 117 Sides How many sides does this shape have? n angle is turn between where two sides meet.

4 Slide 18 / 117 ngles How many angles does this shape have? Slide 19 / 117 Sides How many sides does this shape have? Slide 20 / 117 ngles How many angles does this shape have? 1 This shape has 4 sides. Slide 21 / This shape has 4 sides. Slide 21 () / This shape has 5 angles. Slide 22 / 117

5 2 This shape has 5 angles. Slide 22 () / 117 Slide 23 / Which two shapes have 4 sides? Slide 23 () / Which two shapes have 4 sides? Slide 24 / Which two shapes have 3 angles? & Slide 24 () / Which two shapes have 3 angles? 5 Which shape has 3 sides? Slide 25 / 117 &

6 5 Which shape has 3 sides? Slide 25 () / 117 Slide 26 / 117 Slide 27 / 117 Slide 28 / Shapes Part 2 Slide 29 / 117 Slide 30 / 117 lick to Return to Table of ontents ircle and Oval ircles and ovals have no sides and no angles. ircles and ovals have curved lines. Triangles ll triangles have three sides and three angles. circle oval

7 Slide 30 () / 117 Teacher tes Triangles ll triangles have three Explain sides and to students three angles. that "tri" means 3. See if they can think of other words that have "tri" in it. Slide 31 / 117 Quadrilaterals ll quadrilaterals have four sides and four angles. Quadrilaterals have different names. Move each shape to reveal the name of the quadrilateral. square rectangle trapezoid parallelogram Slide 31 () / 117 Quadrilaterals ll quadrilaterals have four sides and four angles. Slide 32 / 117 Square Quadrilaterals have different names. Move each shape to reveal the name of the quadrilateral. square Teacher tes trapezoid Explain to students that "quad" means rectangle 4. See if they can think of other words that have "quad" in it. parallelogram ll squares have 4 equal sides and 4 angles. They also have parallel opposite sides. Slide 32 () / 117 Square Slide 33 / 117 Rectangle Teacher tes Show students how the length of each side of the square is equal. ll squares have 4 equal sides and 4 angles. They also have parallel opposite sides. ll rectangles have: ~ 4 sides and 4 angles ~ 2 pairs of opposite equal sides ~ opposite sides that are parallel

8 Slide 33 () / 117 Rectangle Slide 34 / 117 Trapezoid Teacher tes Show students how the opposite sides of the rectangle ll rectangles have: are the same ~ 4 sides and 4 angles length. ~ 2 pairs of opposite equal sides ~ opposite sides that are parallel ll trapezoids have 4 sides and 4 angles. They also have 2 sides that are parallel. Slide 35 / 117 Parallelogram Slide 36 / 117 Hexagon ll parallelograms have a quadrilateral where the opposite sides are equal and parallel. hexagon has 6 sides. square rectangle diamond rhombus Slide 37 / 117 Slide 38 / 117 Pentagon pentagon has 5 sides. How many: triangles quadrilaterals circles pentagons hexagons

9 Slide 38 () / 117 Slide 39 / ll four sides are equal on this shape. Teacher tes Have students count up the number of each shape they find. How many: triangles quadrilaterals circles pentagons hexagons Slide 39 () / ll four sides are equal on this shape. Slide 40 / This shape has parallel lines. Slide 40 () / 117 Slide 41 / This shape has parallel lines. 8 This shape is a quadrilateral parallelogram triangle oval

10 8 This shape is a Slide 41 () / 117 Slide 42 / rectangle is a parallelogram quadrilateral parallelogram triangle oval Slide 42 () / 117 Slide 43 / rectangle is a parallelogram 10 This shape is a triangle quadrilateral circle trapezoid 10 This shape is a Slide 43 () / 117 Slide 44 / How many sides does this shape have? triangle quadrilateral circle trapezoid

11 Slide 44 () / How many sides does this shape have? Slide 45 / 117 Lab: 2 Shapes Lab 5 Students will build two dimensional shapes out of straws and twist ties. Then, they will play game in which the teacher or student will describe a 2 dimensional shape they have drawn while the other partner or group members produce that shape. lick here for complete directions lick to return to Table of ontents Slide 46 / 117 Slide 47 / 117 Slide 48 / 117 Slide 49 / 117

12 Slide 50 / 117 Slide 51 / or 3 imensional Shapes 3 Shapes - Part 1 lick on the cube below to watch a video of 3 shapes click me! Slide 52 / 117 lick to Return to Table of ontents Slide 53 / 117 What were the 3 shapes you saw in the video? ube cube is a solid shape. It has 6 flat sides that are all equal in size. flat side on a shape is called a face. cube has 8 corners. What are some objects you can think of that are in the shape of a cube? Slide 54 / 117 ube Slide 55 / 117 Sphere sphere is a perfectly round solid shape. Think of a sphere as a ball, not a circle. sphere has zero faces. What are some objects you can think of that are in the shape of a sphere?

13 Slide 56 / 117 Sphere Slide 57 / 117 ylinder face cylinder is a solid shape with 1 curved surface and 2 flat faces. face What are some objects you can think of that are in the shape of a cylinder? Slide 58 / 117 ylinder Slide 59 / 117 one cone is a solid shape with a curved surface and 1 flat face. face The curved surface comes to a point called a vertex. What are some objects you can think of that are in the shape of a cone? Slide 60 / 117 one Slide 61 / 117 Match the 3 Shapes

14 12 This shape is a sphere. Slide 62 / This shape is a sphere. Slide 62 () / This shape is a cylinder. Slide 63 / This shape is a cylinder. Slide 63 () / 117 Slide 64 / What 3 shape is this object? Slide 64 () / What 3 shape is this object? cylinder cylinder sphere sphere cone cone cube cube

15 Slide 65 / What 3 shape is this object? Slide 65 () / What 3 shape is this object? cube cube cone cone sphere sphere cylinder cylinder Slide 66 / What 3 shape is this object? Slide 66 () / What 3 shape is this object? cone cone sphere sphere cylinder cylinder cube cube Slide 67 / 117 Slide 68 / 117

16 Slide 69 / 117 Slide 69 () / Shapes - Part 2 3 Shapes - Part 2 Teacher tes For this lesson students will explore 3 shapes to find out how many faces each one has. Have objects available to students so they can see, touch and explore the shapes. Slide 70 / Shapes lick to Return to Table of ontents The flat side of a 3 shape is called a face. Slide 71 / 117 Faces lick to Return to Table of ontents This die has a number on each face. lick the die to roll it and mark off each face as it lands on it How many faces does the die have? Slide 71 () / 117 Teacher tes Faces Give students (or groups of students) a dice. Have them count how many sides the dice has. How many faces does the die have? Slide 72 / 117 orners 3- shapes may also have corners. corner is the point where the edges meet. corner is also called a vertex. Where are the other corners on this cube?

17 Slide 73 / 117 orners Slide 74 / 117 Faces How many faces does your cylinder have? How many corners does the die have? Slide 74 () / 117 Faces How many faces does your cylinder have? Slide 75 / 117 orners How many corners does your cylinder have? Teacher tes Give students (or groups of students) an object in the shape of a cylinder. Have them count how many faces the shape has. Slide 76 / 117 Slide 76 () / 117 Faces How many faces does your cone have? Faces How many faces does your cone have? Teacher tes Give students (or groups of students) an object in the shape of a cone. Have them count how many faces the shape has.

18 Slide 77 / 117 orners How many corners does your cone have? Slide 78 / 117 Faces How many faces does your sphere have? Slide 78 () / 117 Faces How many faces does your sphere have? Teacher tes Give students (or groups of students) an object in the shape of a sphere. Have them count how many faces the shape has. Slide 79 / 117 orners How many corners does your sphere have? Slide 80 / 117 Slide 81 / This object has 2 faces.

19 17 This object has 2 faces. Slide 81 () / This shape has 6 faces. Slide 82 / This shape has 6 faces. Slide 82 () / 117 Slide 83 / How many faces does this shape have? Slide 83 () / How many faces does this shape have? Slide 84 / How many corners does this shape have? 0

20 Slide 84 () / How many corners does this shape have? Slide 85 / How many corners does this shape have? 0 Slide 85 () / How many corners does this shape have? Slide 86 / How many faces does this shape have? 0 Slide 86 () / How many faces does this shape have? Slide 87 / How many faces does this shape have? 2

21 Slide 87 () / How many faces does this shape have? Slide 88 / How many corners does this shape have? 6 Slide 88 () / How many corners does this shape have? Slide 89 / 117 Lab: 3 Shapes Lab 8 Students will build a three dimensional cube out of straws and pipe cleaners. They will then dip them in a soap solution to notice the films that are created in the cube frames. uilding the cubes will reinforce their understanding of faces and vertices. They will also make a cone and make bubbles from this, reinforcing their understanding of the properties of cones and spheres. lick here for complete directions lick to return to Table of ontents Slide 90 / 117 Slide 91 / 117

22 Slide 92 / 117 Slide 92 () / 117 rawing Shapes Teacher tes Have students use white boards or paper and rulers to draw shapes according to the attributes listed on each slide. rawing Shapes Slide 93 / 117 rawing Shapes lick to Return to Table of ontents Slide 94 / 117 rawing Shapes raw a shape that has 4 angles. lick to Return to Table of ontents raw a shape that has 3 sides. Slide 95 / 117 rawing Shapes raw a shape that has 4 equal sides. Slide 96 / 117 rawing Shapes raw a shape that has 4 sides and two that are parallel.

23 Slide 97 / 117 Slide 97 () / 117 Slide 98 / How many circles are in this picture? Slide 98 () / How many circles are in this picture? 2 Slide 99 / How many triangles are in this picture? Slide 99 () / How many triangles are in this picture? 8

24 Slide 100 / How many ovals are in this picture? Slide 100 () / How many ovals are in this picture? 8 Slide 101 / How many squares are in this picture? Slide 101 () / How many squares are in this picture? 0 Slide 102 / How many rectangles are in this picture? Slide 102 () / How many rectangles are in this picture? 4

25 Slide 103 / 117 Slide 104 / 117 Slide 105 / 117 Slide 105 () / 117 Pattern locks Teacher tes For this lesson students will use pattern blocks to make different shapes. If you do not have access to pattern blocks, click on the link to print out and Pattern copy pattern blocks. locks baes1st.cmswiki.wikispaces.ne t/file/view/pattern-lock +utouts.pdf Slide 106 / 117 Pattern locks lick to Return to Table of ontents Slide 107 / 117 Pattern locks We can make shapes using different pattern blocks. lick to Return to Table of ontents hexagon square trapezoid triangle rhombus diamond

26 Slide 108 / 117 Pattern locks Slide 109 / 117 Pattern locks What shape did I make using squares? What shape did I make using triangles? ould we use other shapes to make this same hexagon? Slide 110 / 117 Pattern locks Slide 111 / 117 Pattern locks You can use different pattern blocks to make shapes too What shape did I make using diamonds? What pattern blocks did I use? ould we use other shapes to make this same parallelogram? What shape did I make? Slide 112 / 117 Pattern locks locks I Used Slide 113 / 117 Fill in the missing parts of the chart New Shape I Made How many sides? How many angles? square rectangle 4 triangle hexagon diamond

27 Slide 114 / 117 Pattern locks Slide 114 () / 117 Pattern locks Use pattern blocks to make your own shapes. Fill in the chart about your new shapes. Use pattern MP blocks 5 Use to appropriate make your tools own shapes. strategically. Fill in the chart about your new shapes. Math Practice Watch as students use the blocks to create new shapes. e sure they are using them correctly. They should be touching but not overlapping. Slide 115 / 117 Slide 116 / 117 Lab: Going Geodesic with Triangles Have a ball creating a sphere to review concepts, display photos or drawings, share information, or to enhance vocabulary building. need to measure! lick here for complete directions lick to return to Table of ontents Slide 117 / 117

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