Traditional Tales Science: making porridge
Great for children who are not at the point of independently carrying out investigations yet. They must decide how they will further to the porridge recipe (off sparklebox) add their salt or sugar using measuring equipment. If it is too salty or sweet Goldilocks will refuse to eat it so you want them to come to the conclusion of putting a little in at a time using measuring equipment (math link) and tasting it as their 'measure'. The investigation could be on the temperature of the porridge instead.