Content Area: Math

 

Index: 4.4B Grade 2 CPI 1

 

Standard: 4.4 - Data Analysis, Probability, and Discrete Mathematics

 

Strand: B - Probability

 

Cumulative Progress Indicator: 1 -  The student will use chance devices like spinners and dice to explore concepts of probability

·        Certain, impossible

·        More likely, less likely, equally likely

 

Grade: 2

 

Sample Activities:

 

·        Students roll a die, spin a spinner, or reach blindly into a container to select a colored marble, with replacement, a dozen times. They then color the appropriate square in a bar graph for each pick. Did some results happen more often or less often than others? Do you think some results are more likely to happen than others? They repeat the experiment, this time without replacement, and compare the results.

 

·        Students spill out the contents of cups containing five two-colored counters and record the number of red sides and the number of yellow sides. They perform the experiment twenty times, examine their data, and then discuss questions such as Does getting four red sides happen more often than two red sides? They explain their reasoning.

 

·        Each student has a 4-section spinner. Working in pairs, the students spin their spinners simultaneously and together they record whether they have a match. After doing this several times, they predict how many times they would have a match in 20 spins. Then they compare their prediction with what happens when they actually spin the spinners 20 times. They repeat the activity with a different number of equal sections marked on their spinners. Students in the second grade combine the results of all the students in the class, and compare their predictions with the class total.