Worst cases imagined: 47. Worst cases that happened: 0. 🎢 The scary part was the queue. One ride later, he’s dragging his friend back for round two.
#overthinking #comfortzone #sumfizz
#overthinking #comfortzone #sumfizz
October 30, 2026 at 1:12 AM
Worst cases imagined: 47. Worst cases that happened: 0. 🎢 The scary part was the queue. One ride later, he’s dragging his friend back for round two.
#overthinking #comfortzone #sumfizz
#overthinking #comfortzone #sumfizz
The jet passes. Then comes the boom. Watch the shock wave reach the person. Sound on.
A simplified look at the sound barrier. #Science #SonicBoom #SumFizz
A simplified look at the sound barrier. #Science #SonicBoom #SumFizz
October 25, 2026 at 9:27 PM
The jet passes. Then comes the boom. Watch the shock wave reach the person. Sound on.
A simplified look at the sound barrier. #Science #SonicBoom #SumFizz
A simplified look at the sound barrier. #Science #SonicBoom #SumFizz
What does a flower sound like? Sound on. The higher the dot moves, the higher the pitch. Circle → 3 petals → 5 → 7 → circle.
Which shape sounds best? #MathArt #Sonification #SumFizz
Which shape sounds best? #MathArt #Sonification #SumFizz
October 26, 2026 at 12:35 PM
What does a flower sound like? Sound on. The higher the dot moves, the higher the pitch. Circle → 3 petals → 5 → 7 → circle.
Which shape sounds best? #MathArt #Sonification #SumFizz
Which shape sounds best? #MathArt #Sonification #SumFizz
These dots are not going round. Follow the green one: it only moves along a straight line. Eight straight paths. One rolling-circle illusion. Sound on.
#Maths #OpticalIllusion #SumFizz
#Maths #OpticalIllusion #SumFizz
October 25, 2026 at 5:11 PM
These dots are not going round. Follow the green one: it only moves along a straight line. Eight straight paths. One rolling-circle illusion. Sound on.
#Maths #OpticalIllusion #SumFizz
#Maths #OpticalIllusion #SumFizz
2,000 balls. Just two outside slots. How many make it all the way to the edges? Watch the gold counters. Sound on for soft beeps.
#Probability #Maths #SumFizz
#Probability #Maths #SumFizz
October 24, 2026 at 9:46 AM
2,000 balls. Just two outside slots. How many make it all the way to the edges? Watch the gold counters. Sound on for soft beeps.
#Probability #Maths #SumFizz
#Probability #Maths #SumFizz
Nine dots. Four connected straight lines. No lifting your pen. Can you connect them all?
Pause before the reveal and try it.
#Puzzle #BrainTeaser #SumFizz
Pause before the reveal and try it.
#Puzzle #BrainTeaser #SumFizz
October 23, 2026 at 2:02 PM
Nine dots. Four connected straight lines. No lifting your pen. Can you connect them all?
Pause before the reveal and try it.
#Puzzle #BrainTeaser #SumFizz
Pause before the reveal and try it.
#Puzzle #BrainTeaser #SumFizz
Which is bigger: 99 × 101 or 100 × 100? Or are they equal? Choose A, B or C before checking the explanation in the comments. #MentalMaths #SumFizz
October 22, 2026 at 11:08 PM
Which is bigger: 99 × 101 or 100 × 100? Or are they equal? Choose A, B or C before checking the explanation in the comments. #MentalMaths #SumFizz
30 mph out. 60 mph back. Same route, same distance each way, no stops. Is your average speed 40 mph or 45 mph? Choose before checking the explanation in the comments. #MathPuzzle #SumFizz
October 22, 2026 at 11:08 PM
30 mph out. 60 mph back. Same route, same distance each way, no stops. Is your average speed 40 mph or 45 mph? Choose before checking the explanation in the comments. #MathPuzzle #SumFizz
For 30 days, would you take £1,000 each day or start at 1p on day one and double each day’s payment? You keep every payment. Choose A or B before checking the comments. #MathPuzzle #SumFizz
October 22, 2026 at 11:08 PM
For 30 days, would you take £1,000 each day or start at 1p on day one and double each day’s payment? You keep every payment. Choose A or B before checking the comments. #MathPuzzle #SumFizz
21 cards. Three deals. One sealed prediction. Follow the seven of hearts and watch where it finishes. Then try this mathematical card trick with a real deck.
#CardTrick #MathMagic #SumFizz
#CardTrick #MathMagic #SumFizz
October 22, 2026 at 7:40 PM
21 cards. Three deals. One sealed prediction. Follow the seven of hearts and watch where it finishes. Then try this mathematical card trick with a real deck.
#CardTrick #MathMagic #SumFizz
#CardTrick #MathMagic #SumFizz
Random dots. A hidden pattern. Pick a corner, move halfway, repeat—and a triangle fractal appears. Which pattern surprised you most?
#ChaosGame #Fractals #MathArt #SumFizz
#ChaosGame #Fractals #MathArt #SumFizz
October 21, 2026 at 9:03 PM
Random dots. A hidden pattern. Pick a corner, move halfway, repeat—and a triangle fractal appears. Which pattern surprised you most?
#ChaosGame #Fractals #MathArt #SumFizz
#ChaosGame #Fractals #MathArt #SumFizz
Find 25% in two moves: halve it, then halve it again. Watch 48 split into quarters, then try 72 before the reveal. SumFizz.com #MentalMaths #Percentages #SumFizz
October 21, 2026 at 1:41 PM
Find 25% in two moves: halve it, then halve it again. Watch 48 split into quarters, then try 72 before the reveal. SumFizz.com #MentalMaths #Percentages #SumFizz
46 × 9 in your head? Multiply by 10, then subtract the original number. Try 54 × 9 before the reveal. SumFizz.com #MentalMaths #MathTrick #SumFizz
October 21, 2026 at 11:18 AM
46 × 9 in your head? Multiply by 10, then subtract the original number. Try 54 × 9 before the reveal. SumFizz.com #MentalMaths #MathTrick #SumFizz
Would you stay or switch? The host knows where the car is—and that changes the odds. Watch the explanation, then test it yourself.
https://sumfizz.com/try/monty-hall/
#MontyHall #Probability #SumFizz
https://sumfizz.com/try/monty-hall/
#MontyHall #Probability #SumFizz
October 21, 2026 at 3:10 PM
Would you stay or switch? The host knows where the car is—and that changes the odds. Watch the explanation, then test it yourself.
https://sumfizz.com/try/monty-hall/
#MontyHall #Probability #SumFizz
https://sumfizz.com/try/monty-hall/
#MontyHall #Probability #SumFizz
One farmer. One boat. Only ONE item at a time. Can you get the wolf, goat and cabbage across safely? Pause to solve. SumFizz.com #LogicPuzzle #SumFizz
October 20, 2026 at 1:10 PM
One farmer. One boat. Only ONE item at a time. Can you get the wolf, goat and cabbage across safely? Pause to solve. SumFizz.com #LogicPuzzle #SumFizz
He steals $80, then spends it in the SAME shop. A $50 backpack + $30 change. How much did the shop lose? Backpack cost and selling price are both $50. Pause to solve. SumFizz.com #MathPuzzle #SumFizz
October 20, 2026 at 1:55 PM
He steals $80, then spends it in the SAME shop. A $50 backpack + $30 change. How much did the shop lose? Backpack cost and selling price are both $50. Pause to solve. SumFizz.com #MathPuzzle #SumFizz
What percentage would you swap next? Try your pair on SumFizz and tell us whether the swap made it easier.
October 19, 2026 at 6:30 PM
What percentage would you swap next? Try your pair on SumFizz and tell us whether the swap made it easier.
Two equal coins. One lap. How many spins? Pick your answer before watching the arrow. Then try it with two coins.
SumFizz.com #Maths #BrainTeaser #SumFizz
SumFizz.com #Maths #BrainTeaser #SumFizz
October 19, 2026 at 11:03 PM
Two equal coins. One lap. How many spins? Pick your answer before watching the arrow. Then try it with two coins.
SumFizz.com #Maths #BrainTeaser #SumFizz
SumFizz.com #Maths #BrainTeaser #SumFizz
One square out. The bar still looks full. Where did it come from? 🍫
Our take on a classic maths illusion. Watch the outline.
SumFizz.com #MathTrick #SumFizz
Our take on a classic maths illusion. Watch the outline.
SumFizz.com #MathTrick #SumFizz
October 19, 2026 at 10:27 PM
One square out. The bar still looks full. Where did it come from? 🍫
Our take on a classic maths illusion. Watch the outline.
SumFizz.com #MathTrick #SumFizz
Our take on a classic maths illusion. Watch the outline.
SumFizz.com #MathTrick #SumFizz
Same $10,000 paid in. Almost double at 60. The difference? Starting ten years earlier. Hypothetical constant 7% annual compounding; returns not guaranteed. No fees or taxes. SumFizz.com #CompoundInterest #SumFizz
October 19, 2026 at 11:52 PM
Same $10,000 paid in. Almost double at 60. The difference? Starting ten years earlier. Hypothetical constant 7% annual compounding; returns not guaranteed. No fees or taxes. SumFizz.com #CompoundInterest #SumFizz