Final answer:
The knitting group made 496 tassels.
Step-by-step explanation:
To find the number of tassels the knitting group made, we need to divide the total yards of yarn used by the amount of yarn used for each tassel. Given that 1/2 yard of yarn is used for each tassel and the group used 248 yards of yarn in total, we can divide 248 by 1/2 to find the number of tassels.