Second graders learn that the equal sign is not a signal to write an answer but a promise that both sides are worth the same, and test number sentences, sorting them into true and false.
Students will be able to…
The equal sign means both sides are worth the same. So is 3 + 4 = 7 true, and is 2 + 2 = 5? How do you check whether an equation is true or false?
Project this and sort each equation into true or false — tap an equation, then tap whether both sides are equal.
Tap any phase to open the teacher moves and student actions.
The equal sign means both sides are worth the same amount. So is 3 + 4 = 7 true? Is 2 + 2 = 5? How can you check whether an equation is true or false?
Students sort equations into true and false.
Students test an equation.
Students fix false equations.
Students reflect on equations.
Aligned to the Common Core State Standards for Mathematics (Grade 2).
Understand the meaning of the equal sign and tell if equations are true or false.
Determine the unknown number that makes an equation true.
Fluently add and subtract within 20 to check equations.
Construct viable arguments and critique the reasoning of others.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have students take a false equation, change one number, and make it true, so the equal sign becomes a balance they can test. A printable true-or-false-equations worksheet is in the Mathematics 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.