A secret message arrived for you, Ekin — written in code!
Break the code, send codes back, and build your own.
One code at a time. Your progress is saved — you can stop and come back later.
First — the letter code
Shapes can hide letters, too! Here is the secret key:
▲ = A ■ = E ● = I ★ = T ◆ = S ♥ = H ♦ = D ♣ = B
Watch: this code word is ♥ ●
HI
♥ hides H and ● hides I. Match one symbol at a time with the key — that is all code-breaking is.
Practice code — warm up first
▲ = A ■ = E ● = I ★ = T ◆ = S ♥ = H ♦ = D ♣ = B
◆ ■ ■
Tap a box, then tap the letter it hides.
The secret message — word 1
▲ = A ■ = E ● = I ★ = T ◆ = S ♥ = H ♦ = D ♣ = B
♦ ▲ ♦
Tap a box, then tap the letter it hides.
The secret message — word 2
▲ = A ■ = E ● = I ★ = T ◆ = S ♥ = H ♦ = D ♣ = B
● ◆
Tap a box, then tap the letter it hides.
The secret message — word 3
▲ = A ■ = E ● = I ★ = T ◆ = S ♥ = H ♦ = D ♣ = B
★ ♥ ■
Tap a box, then tap the letter it hides.
The secret message — word 4
▲ = A ■ = E ● = I ★ = T ◆ = S ♥ = H ♦ = D ♣ = B
♣ ■ ◆ ★
Tap a box, then tap the letter it hides.
The secret message — last word. You know this one!
▲ = A ■ = E ● = I ★ = T ◆ = S ♥ = H ♦ = D ♣ = B
♦ ▲ ♦
Tap a box, then tap the letter it hides.
Dad's secret message says:
DAD IS THE BEST DAD
Now it is your turn to send codes back to Dad...
Next — number codes
You know this game: numbers can swap for shapes with a key. Here is a NEW key:
2 = ♠ 4 = ● 5 = ▲ 6 = ◆ 7 = ♥ 8 = ♦ 9 = ■ 11 = ★
So in the number sentence 8 − 2, the 8 swaps for ♦ and the 2 swaps for ♠:
♦ − ♠
Your job: encode whole equations with this key. Dad will try to crack them!
Encode a secret equation for Dad
2 = ♠ 4 = ● 5 = ▲ 6 = ◆ 7 = ♥ 8 = ♦ 9 = ■ 11 = ★
6 + 5 = 11
+ =
Tap a box, then tap the shape for that number.
Hand the iPad to Dad!
Dad: here is Ekin's secret equation. Crack it — write the number under each shape.
◆ + ▲ = ★
◆ = ▲ = ★ =
Encode a secret equation for Dad
2 = ♠ 4 = ● 5 = ▲ 6 = ◆ 7 = ♥ 8 = ♦ 9 = ■ 11 = ★
9 − 4 = 5
− =
Tap a box, then tap the shape for that number.
Hand the iPad to Dad!
Dad: here is Ekin's secret equation. Crack it — write the number under each shape.
■ − ● = ▲
■ = ● = ▲ =
Build your own code — for Dad
Pick a secret message. The iPad will write it in code with your letter key — Dad has to crack it without any help!
Dad — crack this code!
(Ekin — do not tell him! The key stays secret this time.)
Ekin judges: did Dad crack your code?
You broke a secret message, encoded equations,
and built a code that even Dad had to crack.
Stars earned: 0 ⭐
For Dad: his progress in every set now saves on this iPad automatically — closing the page and reopening picks up at the same slide.