What I know about Friction & Force ; When we were using the block and the Spring scale the Wide side had the most Friction , So I believe that wide sides have most Friction, The Shortest side was after the Wide side and then the the Long side.
6.1 - I learned Different Surface types have different amounts of Friction . And I learned more mass something has the more Friction it has.
2- We used Spring scales to weigh a Wood block .
3- I learned there are 3 different Variables and I learned to make sure you know which one is which , Because they get confusing.