Page 80 - trackpad v5.1 class 2 flipbook
P. 80
What if you could use computer to create secret codes that only your friends
could decode? What would your code say, and how would you use it to
communicate?
1. When you have a message that looks like this: "HAPYP,"
what do you do to make it readable?
a. Colour it b. Decode it
2. In number grid, do we usually start with the number at the
uiz Bee centre?
a. Yes b. No
REVISIT
▶ In a number pyramid, the number in each space is the sum of the two numbers below
it.
▶ In a number grid each grid is replaced by the value of its result.
▶ Decoding is the process of converting a hidden message to a meaningful text.
ASSESS YOURSELF
1. Tick ( ) the correct option.
a. The hidden message or secret message can be in the form of a symbol,
number, picture, letter, or a .
(i) Pattern (ii) Sequence
(iii) Instruction (iv) Decoding
b. If 1 2 3 then the secret message
will be decoded as .
(i) 1223113 (ii) 2132311
(iii) 2132113 (iv) 2131223
78 Pro (V5.1)-II

