For this pattern you will need (50g Balls):

Shawl Collared Sweater
0-6 mths - 2 Balls
6-12 mths - 3 Balls
1-2 years - 3 Balls
2-3 years - 4 Balls
4-5 years - 5 Balls
6-7 years - 6 Balls

Hat
0-6 mths - 1 Ball
6-12 mths - 1 Ball
1-2 years - 1 Balls
2-3 years - 1 Balls
4-5 years - 1 Balls
6-7 years - 2 Balls

Blanket: 4 Balls

3.25mm and 4mm Needles
Stitch Holder.