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Guess The Next Number
Numbers love to follow secret rules. When you find the rule, you can guess what comes next — every time!
Can you already feel the next number? 😀
In this Spark you will learn the 3-step detective trick, then play a real "Guess the Next Number" game. Tap Next to begin!
Look at the jumps 👣
A number pattern is a row of numbers that change by the same rule each time. To find the rule, look at how big the jump between numbers is.
Tap each arrow below to reveal the jump.
3
tap▶+5
8
tap▶+5
13
tap▶+5
18
Reveal all the jumps to see the rule…
🎉 Every jump is +5! So the rule is "add 5". The next number after 18 would be 23.
Counting up ⬆️
When numbers keep getting bigger by the same jump, the rule is "add". Find the jump, then add it once more to get the next number.
The jump is the same each time. What comes next?
Trick: 8−5 = 3, so the rule is add 3. 14 + 3 = the answer!
Counting down ⬇️
Patterns can also shrink. When the numbers get smaller by the same jump, the rule is "subtract".
Each hop goes back 4: 20 → 16 → 12 → … Keep hopping!
The doubling pattern ✖️2
Not every pattern adds the same number. Some patterns double — you multiply by 2 each step. The jumps get bigger and bigger!
Rule: ×2 (double it)
We start at 1. Tap to build the pattern!
1 → 2 → 4 → 8 … each number is the one before, doubled. Patterns like this grow super fast!
The 3-step detective trick 🕵️
Use these three steps for any "Guess the Next Number" puzzle:
- 1️⃣ Look at two numbers next to each other. Did the number go up or down?
- 2️⃣ Find the jump. How much did it change? Check the next pair — is the jump the same?
- 3️⃣ Use the rule one more time on the last number to get your answer. 🎯
If the jumps are not the same, peek for a different rule — maybe it doubles, or the jump grows by 1 each time (like +1, +2, +3…).
Ready? The next slide is a real detective game!
Pattern Detective 🏆
Use the 3-step trick. Solve all 4 cases!
Case 1/4
Solved: 0
🎉 Case closed, detective!
🌟🔢
You're a Number Detective!
Here's everything you cracked today:
- 👣 A pattern follows the same rule each step. Find the jump between numbers.
- ⬆️ Add patterns get bigger; subtract patterns get smaller — by the same amount.
- ✖️ Some patterns double (×2) or grow by a changing jump — look closely!
- 🕵️ The trick: Look → Find the jump → Use the rule one more time.
Try this anywhere: house numbers, clock times, even stairs! Numbers are full of secret patterns. Keep your detective eyes open. 🔍💜