Karla has 16 biscuits and she eats one quarter of these. How many does she eat? |
(enlarge) |
Student: Two, four, six, eight... ten, twelve, fourteen, sixteen. So that's four. |
Students at the Advanced Counting stage understand that the end number in a counting sequence measures the whole set and can relate the addition or subtraction of objects to the forward and backward number sequences by ones, tens, etc. |