3. Set the magnification control knob, locale the lowest setting until the head is as close l urn the focusing knob, located on the microscope arm, un estage as possible. Look through the ocular lens (eyepiece) at the penny. Turn the focusing knob until the ima moving away from the stage) Is Linc ge of the penny is sharp and clear (the head will be oln sitting in the Lincoln Memorial in your penny ooking through the eyepiece, gradually turn the magnification control knob The change in image size will resemble the zoom action of a camera. size MAKING OBSERVATIONS WITH THE DISSECTING MICROSCOPE ACTIVITY 2 Work in groups. Get the following supplies: a small glass bowl, a pipette, and a blunt metal probe. 2. Use the pipette to remove a planaria from the culture container and place it in your bowl. Locate the worm of your choice and draw it into the tip of the pipette (as shown in Figure 2-3). When the planaria feels the water current, it will prob- ably form itself into a small protective ball, and it will be easy to draw it into the pipette. FIGURE 2-3. Drawing a Planaria into the Pipette