ROB,+TAMEKA,+and+KARYN

3rd Grade Mathematics: Exploring Geometry Good Morning Class!!

Today we will be spending our math hour exploring geometric shapes! First, we will review the words

symmetric and congruent and how to apply these terms to different shapes. Next, we'll move on to

learn how to find the perimeter and area of several geometric figures.

LET'S GET STARTED!!!

**SECTION 1:**

Recall what it means for an object to have symmetry and congruency.

SYMMETRY= placing an invisible line through the middle of an object and having both resulting sides match

CONGRUENT= two objects identical in both shape and size

watch this video to see exactly what congruency means (the explanation starts halfway through the clip): media type="youtube" key="LhOf0RdT4yw" height="315" width="420"

COMPLETE THE FOLLOWING TWO ACTIVITIES TO HELP YOURSELF REVIEW THESE TWO DEFINITIONS.....

1.) ACTIVITY 1: Click this link -> [|SYMMETRY GAME] Answer 10 symmetry problems: your score will appear on the right side of the screen  *BE AWARE*The time you take to answer the problem counts on your score!  When you are done with the 10 problems, RAISE YOUR HAND before you leave the website and move on to the next activity. I will record your score. After I do this you can move on to Activity 2.

2.) ACTIVITY 2: Click this link ---> [|Which Shapes are CONGRUENT?!?] The first thing you see on this website should be an image of 12 different shapes.  There are 4 pairs of congruent shapes: decide which 8 shapes make up these 4 pairs and  record them on a piece of paper. Check if you are right by clicking box that says  "REVEAL ANSWER" below the image. Turn in the piece of paper you wrote the answers on.  **(you should get full credit for this because you have access to the answers, but I need to make sure you did the activity so that's why I'm asking for the piece of paper)**

You may now move on to the next section!!!!

**SECTION 2:** LET'S MOVE ON TO LEARNING ABOUT PERIMETER AND AREA!! PERIMETER= the total distance around a shape AREA= the amount of space inside a shape

watch this video to hear a fun song and learn more about perimeter and area!!!!

media type="youtube" key="D5jTP-q9TgI" height="315" width="420"

NOW COMPLETE THE FOLLOWING ACTIVITIES TO FIND THE PERIMETER AND AREA OF SEVERAL DIFFERENT SHAPES:

1.) ACTIVITY 1: Click this link ---> [|PERIMETER GAME] Answer 10 perimeter problems: your score will appear on the right hand side of the screen (*Remember: you can find the perimeter by adding all of the sides of the shape*)  *Be aware* the time you take to answer counts towards your score!  When you are done answering the 10 questions, RAISE YOUR HAND before you leave the website and move on to the next activity. I will come around and record your score. After I do this you can move on to the next activity.

2.) ACTIVITY 2: Click this link ---> [|AREA GAME] Answer 10 area problems: your score will appear on the right hand side of the screen (*Remember: you can find the area by adding the total number of square units within each shape*)  *Be aware* the time you take to answer counts towards your score!  AGAIN: When you are done answering the 10 questions, RAISE YOUR HAND before you leave the website and move on to the next activity. I will come around and record your score. After I do this you can move on to the next activity.

3.) ACTIVITY 3: Click this link --> [|DRAWING TOOL] You will be using this drawing tool to make your own shape.  Step 1: Pick a color and use the straight-line tool (the fourth button on the bottom) to draw any shape you want. It can be as simple as a triangle or you can draw a more complex shape like a hexagon or an octagon.  Step 2: Now click the ruler and place it beside the longest line in your shape. (you can rotate the ruler if you need to by clicking and dragging the circle icon at the end)  Step 3:Measure the longest line and use either the text tool or the pen tool to record the length of that side (if you need help with either of these tools please raise your hand and I will come to assist you).  Step 4: Continue to measure each side of your shape and record the length of each line next to it. Step 5: When you have measured every side, find the perimeter of your shape. Record this somewhere on the page by using the text or pen tool. Step 6: Use the print button to print out your shape with its measurements (replace the ruler icon on the largest line, please) Hand in at the front desk!

HOW YOU WILL BE GRADED FOR YOUR WORK IN THE COMPUTER LAB TODAY:

media type="custom" key="12564220"

=More Fun With Geometry= Class, I hope today's lesson in the computer lab was an enjoyable change of pace for all of you. You should now have a firm understanding of symmetry, congruency, perimeter, and area and how these terms can be applied to different shapes.

If you have completed your work and you would like to have more fun with congruent shapes you can get more practice on the websites below. [] Try playing Ice blocker by sorting congruent shapes. Look out for blockers! [|ttp://www.uptoten.cohm/kids/kidsgames-mixedbag-findhalfsnowflake.html] If you want a challenge try finding the symmetry in these snowflakes.

[] If you want more practice with perimeters you can find help here.

__ LEARNING STANDARD THAT OUR LESSON FOLLOWED: __ CC.7.G.2 Draw, construct, and describe geometrical figures and describe the relationships between them. Draw (freehand, with ruler and protractor, and with technology) geometric shapes with given conditions. Focus on constructing triangles from three measures of angles or sides, noticing when the conditions determine a unique triangle, more than one triangle, or no triangle.

WORKS CITED: // Congruent shapes //. (2012). Retrieved from [] gruencysimilarityrev3.shtml

Drawing tool. (n.d.). Retrieved from [|http://www.glencoe.com/sitescommonassets/mathematics/eb] ook_assets/vmf/VMF- Interface.html

// iXL: Second grade math practice //. (2012). Retrieved from http://www.ixl.com/math/grade-2

// Math rocks! perimeter and area //. (2010). [Web Video]. Retrieved from [] q9TgI&feature=player_embedded

// Math word problems sample clip //. (2009). [Web Video]. Retrieved from [|http://www.youtube.com/watch?v=LhOf 0RdT4yw&feature] =player_embedded

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