Home Activity: Negative Numbers

A fun 10-minute activity to do with your child!

Dear Family,

Your child is learning about positive and negative integers. These numbers are everywhere in daily life - temperatures, elevations, bank accounts, and more! This is an important skill for the Florida FAST test. Below are simple activities you can do at home to help your child succeed. No math expertise needed!

Activity 1: Temperature Detective 5 min

You'll Need:

  • Weather app or thermometer
  • Paper and pencil

Look up today's temperature and record it. Then look up a cold place (like Alaska or Antarctica in winter) and find a temperature below zero.

Ask: "If it's -15 degrees in Alaska and -8 degrees in Chicago, which city is colder?" (Alaska, because -15 is less than -8)

Challenge: "If the temperature is -5 degrees and goes up 12 degrees, what's the new temperature?" (7 degrees)

Ask about absolute value: "How far is -15 from zero?" (15 units - that's the absolute value!)

Key Phrase to Use:

"The farther from zero, the more extreme the temperature. -20 is colder than -5 because it's farther from zero on the cold side!"

Activity 2: The Elevator Game 5 min

You'll Need:

  • Paper and pencil
  • Optional: building with an elevator or parking garage

Draw a building with floors: B3, B2, B1 (basement), G (ground = 0), 1, 2, 3, 4, 5. B floors are negative numbers!

Play "Elevator Math": "You're on floor 2. You go down 5 floors. What floor are you on now?" (2 - 5 = -3, or B3)

Ask: "Which floor is higher, B2 or B4?" (B2 is higher because -2 > -4)

Challenge: "How many floors between B3 and floor 4?" (7 floors - this connects to absolute value!)

Real-World Connection:

"Parking garages and tall buildings use negative numbers for underground floors. Ground level is like zero - above is positive, below is negative!"

Activity 3: Money and Debt Game 5 min

You'll Need:

  • Paper and pencil
  • Optional: play money

Scenario: "You have $10. You buy something for $15. How much money do you have now?" (-$5, you owe money!)

Ask: "Who is better off: someone with -$20 or someone with -$5?" (-$5 is better because you owe less)

Challenge: "You owe $8 (that's -$8). You earn $12. Now what do you have?" ($4, because -8 + 12 = 4)

Important Reminder:

"With money, negative means you OWE. -$50 is worse than -$10 because you owe more. Zero is when you're even!"

Questions to Ask Your Child

You're Making a Difference!

Just 10 minutes of practice at home can make a big impact on your child's confidence and success. Understanding negative numbers is essential for algebra and many real-world applications. Thank you for being part of their learning journey!

Para Familias Hispanohablantes:

Su hijo esta aprendiendo sobre numeros positivos y negativos. Los numeros negativos son menores que cero y se escriben con un signo menos (como -5). En una linea numerica, los numeros negativos estan a la IZQUIERDA del cero. Cuanto mas a la izquierda, mas pequeno es el numero. Entonces -10 es menor que -3. El valor absoluto es la distancia desde cero (siempre positivo). Por ejemplo, |-7| = 7. Las actividades de arriba usan temperatura, elevacion, y dinero para practicar. Gracias por apoyar el aprendizaje de su hijo!