Few things + Pythagorean Theorem & Surface Area

We started with an activity in class today which was pretty fun!!  Professor Klassen said we were supposed to be in a group with at least 3 people.  She gave us a worksheet about circumference and area and said this is the best way children will learn to find circumference and area. Our professor gave us an example on what to do! Then we just followed directions with each object. One person from each group went and got all of these: long string which is not stretchy, ruler, and  5 different objects that we shared with each group:Lid,Pumpkin plate, Cup, Oats can, and Easy Button. In the worksheet we were supposed to use each item and find circumference and diameter while using the long string. Then measure it with the ruler. After that we had to record our answers by dividing the circumference and diameter to find the π.   Our 2^nd worksheet was based on Pythagorean Theorem. For this worksheet we used square centimeters. 

Here is some helpful definitions & few formulas to know while doing it! As well as finding the Pythagorean Theorem & Surface Area.

1) Circumference-It is the distance around the edge of a circle or a curved geometric figure.

2) Diameter- A straight line going through the center of a circle connecting two points on the circumference.

    * Remember to get the π you have divide       Circumference by the Diameter.

3) 2 formulas for circumference are C=πd and C= 2πr

4)  Pythagorean Theorem- The sum of the squares of the lengths of the sides of a right triangle is equal to the square of the length of the hypotenuse.

5) Formula for Pythagorean Theorem is a^2 + b^2=c^2 . 

Also a nice link to practice this formula Click here!!

  6) Surface Area- The extent of a 2-dimensional surface enclosed within a boundary. 

   7)The formula for surface area depends on the shape of the two-dimensional object. To practice this formula here is a small worksheet on square pyramids for the students and answers for the teachers!! Here you go!!

As well as a small worksheet on rectangular prism on surface area and  enjoy!!