How to teach son to use a spoon?

He gets the concept of putting the spoon in his mouth, but he can’t get food ON the spoon.

For example, if he has yoghurt, he puts the spoon in, but doesn’t “spoon it up”, so only gets a VERY small amount. He ends up frustrated and throws the plate on the floor. 😒 ADVICE PLEASE?! 😓

Note: he’s 1