Seventh graders master the sign rules for multiplying and dividing integers — same signs make a positive, different signs make a negative — building fluency with positive and negative numbers.
Students will be able to…
A negative times a negative equals a positive? It seems strange — but there’s a clear rule. How do signs behave when you multiply and divide?
Project this and change the signs and operation. Watch the result sign — same signs make positive, different signs make negative!
Tap any phase to open the teacher moves and student actions.
A negative times a negative equals a POSITIVE? How can that be?
Teacher models.
Class uses the Sign Machine.
Students compute.
One problem.
Aligned to the Common Core State Standards for Mathematics.
Apply properties of operations to multiply and divide rational numbers.
Understand that products of integers follow sign rules.
Understand integer division and its sign rules.
Use structure in the sign rules.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have students evaluate expressions that mix negative numbers with order of operations, like −2 × (3 − 7). A printable integer-operations sheet is in the Math library.
Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.
A quick self-check with instant feedback, drawn from this lesson’s key terms.
A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.