We used a ripple tank to make ripples. We measured the frequency with the handheld strobe. We measured the wavelength. Then calculated speed.
We dissolved eggshells using acid, to make rubbery eggs with just the cell membrane. One squirtedd water everywhere.
We observed a whole lot of stuff under the microscope. We have been making slides and covering them with a cover slip. We looked at onion cells with iodine stain. Then scraped cheek cells with a toothpick and used methylene blue slide. We looked algae from pondwater. We looked at cheese mould. We looked at yeast and yogurt bacteria.
We made yogurt from milk and bacteria.
We made agar plates.