n missing on the word "on" towards the end. Suggest they draw a pencil cross on the origin, so they can focus on where to put the colouring from the Smartie. Could tell them how much water to add and then the origin will naturally be above the water line. Very good to have a student protocol like this: they like instructions sheets like this!
Need to change and clarify step 4 :
"...apply a small amount of the food colouring from the smartie to the filter paper." Where exactly and as a line? as a dot ? all over? Pupils will not know this important step.
This style of worksheet has gotten me a lot of positive feedback in lesson observations, work scrutiny and interviews, as they show the extent to which the student has met the learning outcomes and show progress within a lesson. They also have an SMSC opportunity and space for student reflection.
Introducing the development of the periodic table, I will use in conjunction with the AQA double page spread on this. Key points are that pioneers used atomic weight but only Mendeleev correctly predicted and left spaces for new elements.