Teaching students to understand mathematical operations can be tricky. However, when students understand which sign (+ or -) makes a number sentence true, they will be able to solve equations much more easily. Here are some activities to help teach students which sign makes a number sentence true.

Visual Aids

One of the best ways to help students understand mathematical operations is to use visual aids. This can be as simple as drawing a number line and labeling it with + and – signs. Students can then practice placing numbers on the number line and determining which sign to use to make the number sentence true.

Number Sentence Sort

For this activity, create a set of number sentences with missing signs. For example, 5 __ 3 = 8, 9 __ 4 = 5, etc. Have students work in pairs or small groups to sort the number sentences into two piles: those that require a plus sign and those that require a minus sign. This activity helps students identify patterns and understand the concept of addition and subtraction.

Build-a-Number-Sentence

This activity is similar to a word-building game. Provide students with numbers and signs and have them build number sentences on their own using the materials. This hands-on approach helps students become more comfortable with mathematical symbols and improve their understanding of which sign to use.

True/False Number Sentences

Create a series of number sentences and have students determine whether they are true or false. For example, 7 + 3 = 10 (true) or 8 – 3 = 7 (true). This activity helps students practice identifying whether a number sentence requires addition or subtraction to make it true.

Daily Word Problems

Word problems are an excellent way to help students apply mathematical concepts in real-life situations. This activity can be done daily, where you provide students with a word problem and ask them to solve it using the correct sign. For example, “John has seven marbles. He gave away three. How many marbles does he have now?” This word problem requires students to use subtraction to get the solution.

In conclusion, teaching students which sign makes a number sentence true doesn’t have to be complicated. By using visual aids, number sentences, hands-on activities, and word problems, students will be able to gain a deeper understanding of the concept. With these activities, students will become more confident in their mathematical abilities and can tackle any equation thrown their way.