Probability Spinner: Read Weights and Compare Likelihoods
Fresh spinners change the number and allocation of colored sectors.
A Bigger Sector Is Not a Promise: Where Likely Slips Into Certain
Fresh spinners change the number and allocation of colored sectors. Compare their proportions; when the most or least likely colors tie, every tied answer is accepted.
Grade 7 Probability: Building Sample-Space Reasoning Before Compound Events
For students learning fractional probabilities, complements, and likelihood comparisons. Wedges reflect displayed color weights and their total. This page practices theoretical probability and does not record experimental frequencies.
Three Probability Skills from Spinner Weights
- Express probability as a color weight divided by the total
- Calculate a color probability and its complement
- Compare color weights and recognize tied extrema
Read Weights, Find Probabilities, Compare Colors
- Read each color weight and the total number of parts.
- Find the requested color probability, complement, or most or least likely color.
- Choose an answer. If colors tie for the requested extreme, any tied color is accepted.
Read the Weights, Then Find Probabilities and Complements
Read the displayed parts for each color before adding the total. The unequal colored wedges are not equally likely units. Accept tied colors when identifying the most or least likely outcome.
Probability Spinner Questions Teachers Hear
Q: Are all colors equally likely?
A: Not necessarily. Each wedge has an angular size proportional to its displayed parts, and its probability is those parts divided by the total.
Q: Why can more than one color be correct?
A: Colors with equal largest or smallest weights tie for the most or least likely outcome. Every tied answer is accepted.