virtual frog dissection worksheet answer key pdf

#Virtual frog dissection worksheet answer key pdf how to
#Virtual frog dissection worksheet answer key pdf manual
#Virtual frog dissection worksheet answer key pdf skin
#Virtual frog dissection worksheet answer key pdf full
#Virtual frog dissection worksheet answer key pdf free

The tadpole continues to swim, eat and grow for several weeks before it matures to the next stage. Its tail grows longer and a fin forms, which allows the tadpole to swim effectively. As the tadpole develops, it forms gills that allow it to breathe efficiently underwater. The tadpole looks more like a fish at first than like a frog. Within 2 to 25 days, depending on water temperature, the egg hatches into a tadpole. The fertilized egg is a single cell that rapidly divides, again and again, producing new cells that quickly differentiate into the organs of the frog embryo. The outer layer of a fertilized egg is a jelly-like material that swells in water, forming a protective coating. The male frog fertilizes the eggs as they are laid. The female frog usually lays eggs in water in a string or mass that sticks to vegetation. The lifecycle of a frog begins with a fertilized egg. (Toads are also tailless, leaping amphibians, but they usually have rough, warty skin.)įrogs range in size from less than 0.5 inches to 12 inches long! Frog Science Lesson Frog Life Cycle Others are terrestrial, staying mostly on land or in trees. Some frogs are aquatic, spending most of their time in the water. What makes frogs different from other amphibians? They have smooth skin, are usually tailless as adults, and have the ability to leap. There are three orders of amphibians: frogs and toads with over 2,000 species, salamanders (including newts) with approximately 300 species, and caecilians with about 160 species. The name Amphibian means literally ‘both life.’

#Virtual frog dissection worksheet answer key pdf skin

They have moist skin that water can pass in and out of, and most of them spend part of their life (in the tadpole-like larva stage before they mature) in the water. Download: Frog Dissection Lab Introduction to Frogsįrogs are animals that belong to the class Amphibia, commonly known as amphibians.Īmphibians live both on land and in the water sometimes they live in water only before they are fully grown.

#Virtual frog dissection worksheet answer key pdf manual

They’re smaller animals (requiring less manual dexterity) and can be raised quickly for laboratory work. They’re also practical, too.įrog dissection is cheaper to conduct than larger animal and organ dissections. All the images used in the slides are my own personal photos I’ve taken over the years.Why do we dissect frogs? As it turns out, a frog dissection, like other complex animal dissections, reveals enough about how our bodies work to be valuable.

#Virtual frog dissection worksheet answer key pdf free

There are several virtual apps for human anatomy, but I haven’t found one for the frog that is free and high quality. Unfortunately, I don’t have the skills (or the time) to create it. I look forward to an eventual replacement for the old Flash pages where students have a more interactive experience. I did include both male and female frogs in this exploration. Then students examine the digestive system, circulatory system, and urogenital system. The dissections focus mainly on the external anatomy of the mouth and head. You can find all of the labeling images on this page. The in-person students will label the frog on paper, though I do provide them with a word bank.

#Virtual frog dissection worksheet answer key pdf full

In both version, students will label a full image of a frog, though with slides, this was converted to a drag and drop version. Students usually work in pairs or groups of three.

#Virtual frog dissection worksheet answer key pdf how to

I use this handout with directions for students to learn about the structures found on the frog and how to cut it. Students in class will still be able to dissect a real frog specimen, though they will have the option to do the virtual version. In addition, students also view a video of a dissection and answer questions ( EdPuzzle). Most of these tasks ask students to drag labels to the image or answer questions about what they observe. Each slide has an image, a description, and a task for students to complete. I relied on my portfolio of frog dissection images to create a Google Slides version of the lesson. I created this version to be interactive, though not as flashy, as those lost pages. In the past, I have used virtual interactive versions of the dissection, but many of those have been lost when Flash content was removed from sites. I had to come up with a way for online learners to experience the dissection. The pandemic of 2020 derailed this activity, and a percentage of students chose remote learning in 2021. I can understand why this project may seem like a relic, but it is still in our curriculum. Though some schools have decided to opt out of this project, it remains one of the most remembered activities of the school year. Students usually end the comparative anatomy unit with a dissection of a frog specimen.