SCRATCH CHALLENGES

1) Use the Letter shapes to write your first name on the page. Then introduce some special effects such as making the letters wobble and change their appearance.

2) Point, click and move
Make an object both point and glide towards the mouse position when you click on the stage
Hint: Motion > point towards
Hint: Sensing > mouse down?

3) Make two animals have a forwards and backwards conversation
Hint: Use broadcast

4a) Play all the different drum sounds automatically
Hint: create a variable for the drum number
b) Extension – keep recycling through all the drum sounds automatically

5) Make Dan or Anjuli or Cassy dance to a beat, using all of their dance shapes

6) Make a sprite gradually grow in size and then shrink
Hint: make a size variable

7) Count down on a timer. A rocket takes off when you reach zero
Hint: Use the number icons in the letters folder

8) Add, multiply or subtract two variable numbers
Hint: Just to do addition only you will need 4 variables: firstNum, secondNum, answer (computer calculated) and myAnswer (human calculated)

9) Make 2 different balls move around on the stage
a) the first ball moves in straight lines but bounces randomly whenever it hits the edge
b) the second moves randomly, changing direction all the time

10 a) One sprite chases another sprite around the stage. The first sprite moves in straight line but bounces off the edge randomly. The chasing sprite chases the first sprite but is moving slower.
b) Extension – if the chasing sprite catches the other sprite then it says something sensible and makes a suitable sound

Source: http://billkerr2.blogspot.com/2009/02/scratch-challenges-update.html