Positive & Negative Numbers Lab

Choose Your Activity

Watch operations happen on a number line and with integer counters, discover the sign rules for multiplication and division, then practice online or print a classroom-ready set.

Addition & Subtraction Explorer

See positive and negative numbers move on a number line. Switch to integer counters to watch zero pairs appear and cancel.

Multiplication & Division Explorer

Animate groups, direction, and sign patterns. Highlight the rule that same signs make a positive and different signs make a negative.

Online Practice

Practice one operation or a mixed set. Problems are randomized and every response receives immediate feedback with a sign-rule reminder.

Answerpillar 🐛

Move a growing caterpillar under falling integer problems. Catch each problem with the segment showing its correct answer — but one wrong catch will flatten your Answerpillar!

Printable Practice

Create 10, 15, or 20 integer-operation problems with a separate answer key for classroom use.

Addition & Subtraction Explorer

Choose two integers and watch the operation modeled step by step.

1. Choose numbers

and

2. Choose operation

3. Animation

Positive → move right / positive counterNegative → move left / negative counterOpposites form zero pairs

Subtraction idea: subtracting a number is the same as adding its opposite. For example, 4 − (−3) = 4 + 3.

Multiplication & Division Explorer

Focus on magnitude first, then watch the signs determine whether the answer is positive or negative.

1. Choose numbers

and

2. Choose operation

3. Animation

Same signs → Positive

Different signs → Negative

Remember: multiplication and division use the same sign rule: same signs give a positive answer; different signs give a negative answer.

Online Practice

Choose a focus and difficulty. Each question includes instant feedback and an explanation.

Operation

Difficulty

Questions

Score: 0 / 0

Answerpillar 🐛

Move with your trackpad/mouse or the ← → arrow keys. Use ↑ and ↓ to rotate the falling problem 90° so you can line it up with an answer segment. Guide it onto the segment with the correct answer. One wrong catch flattens the caterpillar!

Operation

Starting Level

Game

AnswerpillarCatch the problem with the correct answer segment.

Round
1

Caught
0 / 5

Segments
6

Round 1 begins with 6 answer segments. Each cleared round adds 2 more.

How to play: Move the caterpillar horizontally with the trackpad/mouse or ← →. Press ↑ to rotate the falling problem 90° clockwise and ↓ to rotate it 90° counterclockwise. The falling problem must touch the segment containing its answer. A correct catch earns a point and a cheerful sound. A wrong segment triggers a splat, flattens the caterpillar, and ends the game. If a problem misses the caterpillar completely, it simply falls again.