can u guess who he is book author

• He invented more than 500 new words and character names.
• He wrote most of his books in his garden shed.
• One of his most famous books almost had a different name.
• His books were inspired by the people and things around him.
• fought in WW2 and was a spy.
•  can u guess who he is 

maths video

this is a math video about Transformations: Rotations to show how you do it