1. All personal items are to be put on the sideboards and out of walk ways. This includes beverages.
2. Must have shoes on at all times during labs.
3. Must have gloves on when handling specimens. Be sure you throw your gloves away after their use. Please do not take extra gloves and play with them!
4. It is your job to wash and dry any utensils you use that touch your specimen. Once dried, return them to the same location as you picked them up.
5. Fold up the plastic wrap around the wet newspaper inside your dissection try and then place it in the trash can.
6. Return your dissecting tray to the sideboard and stack it the same way you received it - stack them criss-crossed so that they won't stick to the wax in the next tray.
7. Use sanitary wipes to clean your lab station at the end.
8. No one will be excused until everything is cleaned up and in order for the next class.
9. Ten minute cut-off at end of class for clean-up.
A. Prepare a bag to keep your speciment in prior to obtaining your specimen.
>Get a gallon/quart plastic zip lock bag and a sharpie from the black cart.
>Write your names and class period on the outside of the plastic bag.
>Return the marker to the front table.
>Keep your bag to use at the end of class to keep your specimen in. All parts of the starfish are returned to the plastic zip lock bag.
B. Preparing your Dissection Tray:
>>I will demonstrate. Get a tray, a roll of plastic wrap, piece of newsprint, and scissors if desired.
>>Pull off a piece of plastic wrap that will go completely around the tray lenghtwise.
>>Now, take one of the pieces of newspaper print and place it on top of the plastic wrap inside the tray.
>>Now, all you have to do to return a clean tray at the end of class is to fold up the plastic wrap around the newsprint and throw it away in the trash can.
<<The newsprint has 2 purposes:
>first, it helps hold down the plastic wrap inside the tray, and
>second, it absorbs liquid from the starfish which aids you with dissection and handling your specimen.
Tip: You may want to pull off a long piece of plastic wrap to put around the keyboard on your chromebook so you won't get any starfish liquid or pieces on your keyboard inadvertently.
C. Getting your Specimen:
>Bring the plastic bag you've prepared for storing your starfish and your prepared dissection tray to the front to obtain your specimen.
>You will be checked whether you have done the 2 preparatory steps prior to receiving your specimen.
>Be sure to rinse your specimen in water briefly to help remove the preservative before you take it back to your table.
Materials for External Dissection:
- dissecting pins about 6
- abt 10 pieces of paper to label structures with pins
Watch the Video prior to starting the questions/identififying of external structures. Use the pictures provided to help you with identification.
