Understanding Probability

1
Understanding Probability

• Mrs. Patricks
• Third Grade

2
Coin Toss

• One person take a scratch piece of paper and make
  a chart that has two columns
• Heads and Tails
• Another person will count the number of flips by
  marking tally marks on a scratch sheet of paper.
• Each group will flip the coin 100 times and
  record what the coin lands on.

3
Coin TossDouble click on the website below.

• http//www.homestead.com/betweenwaters/files/proba
  b.html

4
Independent Practice
5
Directions

• Number your notebook paper 1-10
• Each slide contains a bag that has items in it.
  You are to pretend that if you picked an item
  from the bag without looking to get an answer to
  each question.

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1. Write whether picking a red smiley face is
certain or impossible.
7
2. Write whether picking a blue smiley face is
certain or impossible.
8
3. Write whether picking a yellow smiley face is
certain or impossible.
9
4. Write more likely, less likely, or equally
likely to tell how likely it would be to pick a
red heart rather than a blue heart out of the
heart bag.
10
5. Write more likely, less likely, or equally
likely to tell how likely it would be to pick a
red heart rather than a blue heart out of the
heart bag.
11
6. Write more likely, less likely, or equally
likely to tell how likely it would be to pick a
red heart rather than a blue heart out of the
heart bag.
12
7. Write more likely, less likely, or equally
likely to tell how likely it would be to pick a
red star rather than a green star out of the can.
13
8. Write more likely, less likely, or equally
likely to tell how likely it would be to pick a
green star rather than a blue star out of the can.
14
9. Write more likely, less likely, or equally
likely to tell how likely it would be to pick a
penny rather than a dime out of the box.
15
10. Write more likely, less likely, or equally
likely to tell how likely it would be to pick a
quarter rather than a dime out of the box.
16
Good Job!

• Make sure that your name is on your paper and
  turn it in!