Basic Probability Rules
Free to teach as-is — the teacher guide, student handout, and slides are included.
Free — we'll email you an access link. Google Docs format.
Objective
I can define and apply the basic rules and laws of probability, such as the addition rule and the multiplication rule.
Part 1 of 3
Warm-up video
Unknown Channel · 5:00
We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
12 questions
Define the addition rule of probability in your own words.
Explain why it is necessary to subtract the probability of the intersection of two events when using the addition rule.
Part 3 of 3
Exit ticket
Quick comprehension check
“In a class, 60% of the students play soccer, 40% play basketball, and 20% play both. What is the probability that a randomly selected student plays either soccer or basketball or both? A survey shows that 75% of people like pizza, 50% like burgers, and 40% like both. What is the probability that a randomly selected person likes either pizza or burgers or both? At a school, 30% of students take art, 25% take music, and 10% take both. What is the probability that a randomly selected student takes either art or music or both?”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
Slides
Ready to present
We'll ask for your email to send your access link — nothing else.
Teaching a group at a different level?
Where are your students right now? We'll rebuild this lesson to match — including the teacher guide, student handout, and slides, saved to your Google Drive.
Adapt This Lesson
