If you want, you can go do the worksheet AND GIVE IT TO MR TAN PERSONALLY TO MARK.
Remember that the worksheet of the Indices is very important. If you don't know how to do it, please... Please seek help from Mr Yeo.
(So many worksheets I can't even count)... Just scan through the entire bunch of Science worksheets and do it. I guess. And the answer keys and the slides will be sent to you by Ms Teo.