Lani+Knowles+Sexual+Reproduction+vs+Asexual+Reproduction

The purpose of this lesson is to introduce the students to the multiple forms of reproductive strategies used my unicellular and multicellular organisms. This subject is part of the Biology 30 curriculum and is a stepping stone and intro to further studies in genetics and cellular biology, as we all cellular reproduction. The lesson encourages the students to take control of their own learning and use the internet along with effective internet research skills to answer questions about reproductive strategies rather than lecture or traditional resources such as the textbook. The lesson gets students involved and familiar with using the internet to further their own knowledge about educational topics rather than to depend solely on the teacher to tell them what is important. This allows the students to expand their studies beyond the basic curriculum requirements and to learn and research topics of interest that may or may not be part of the curriculum. SLOs: **Students will describe the diversity of reproductive strategies by comparing the alteration of generations in a range of organisms; e.g., DAPHNIA, sea anemone, moss, pine.** You may want to include some ICT's with this lesson. I have found a few that apply well to what you are teaching the students.
 * ABSTRACT:**
 * Lesson Objectives:**
 * GLOs ** : Students will describe the processes of mitosis and meiosis.

ICT's: C.1- Students will access, use and communicate information from a variety of technologies. 3.2 refine searches to limit sources to a manageable number 3.4 access and retrieve information through the electronic network

C.4 - Students will use organizational processes and tools to manage inquiry. 3.2 develop a process to manage volumes of information that can be made available through electronic sources

· Whiteboard · Erasable white board pens · Sexual Reproduction Table · Computers with internet connections **TEACHER GUIDE AND ANSWERS** · Sexual Reproduction · The normal type of reproduction that we have been studying, using meiosis to produce male and female gametes which combine to form a zygote which contains all the genetic material and information as the parents, but is genetically different, more diverse due to crossing over and mixing of genetic material during fertilization. o Oviparousness …production of eggs that fertilize and grow in an external environment…..BIRDS REPTILES
 * Materials:**

o Viviparousness ….production of living young which are born alive and developed…..humans and other mammals ( · Asexual Reproduction · Mitosis is the key mechanism involved in asexual reproduction, therefore asexual reproduction would create offspring with identical genetic material as the parent, mitosis does NOT create any genetic diversity….just copies  · The best example of asexual reproduction is bacteria which use a process known as binary fission….its like mitosis, but because bacteria and other single celled organisms only have a single circular piece of DNA, its not referred to as traditional mitosis…copying and then splitting to produce two daughter cells  · Bacterial asexual reproduction and the sort of idea of how rumors spread are the same idea, their both exponential…meaning if you tell two friends and they tell 2 and they all tell 2 and so on and so forth, a lot of people know in a short period of time  · Bacteria reproduce the same way….1 cells splits to form 2 and then those 2 split to form 2 more each and then all those split to form 2 more each and so on and so forth….so a great number bacterial cells is produced in a short period of time. · There is a great variety of forms of asexual reproduction o Budding Ø Vegetative reproduction…..Strawberries, sprouts form from streamers/creepers which branch out from the original plant. Ø GO into story about how trees and bushes will also send out shoots and roots to produce new plants….story about my grandmas tree and how we needed to finally poison and kill the stump of the tree so it would stop sending out roots and shoots into the grass of the front lawn. Ø Fragmentation….potatoes and other plants that can be cut up and will grow new individuals Sea stars, a form of star fish but with more legs…can also propagate by fragmentation o Binary fission ….bacteria and other single celled organisms. All offspring of the original bacteria are identical genetically, that’s why antibiotics work so well. o Conjugation….. But bacteria and other single celled organisms can also trade genetic material with the use of the pilus tube and create or share immunity factors with each other.

o Spore production …..Mold is the best example, the mold that develops on foods left out are all developed from spores that have begun to grow on the food o Self-fertilization ….parthogenesis o Cross fertilization … o Seed production ……plants produce seeds from pollen from males plants parts, mixes with eggs from female plants and produces seeds. **STUDENT LESSON** Lesson Length: 60 minutes

INTRO: Introduce the idea that reproduction can be accomplished in a number of different ways and that sexual reproduction involving two partners of the opposite sex is not the only way. Have a discussion of multiple types of sexual reproductive strategies and make a mind map/web to compile all the ideas, have the students following along and create an inspiration mind map of all of the sexual reproductive strategies they can think of. -15 Minutes- BODY: -20 Minutes-
 * Once you have created a mind map of terms and sex strategies as a class, Individually search for more terms to focus your search using yahoo or google.. Put the two broad term reproductive strategies into the search window and look through the first 5 results to find more terms that are synonymous with the broad reproductive strategies. Remember the rule about information from the internet, don’t take all your information from one site, corroborate and back up information by finding similar information on multiple sites

-25 Minutes-
 * Using the breadth of terms and vocabulary compiled by searching, complete the table about reproductive strategies. Use the sites provided to find the information….use the search tool bars at each site and the key words to find what your looking for. Don’t forget to include the terms and vocabulary from the reproductive table as well.

SPONGE ACTIVITY If you complete the table of reproductive strategies, choose one asexual reproductive strategy and prepare 1-2 minute summary of what it is, include examples of organisms that use this strategy to reproduce.

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Great lesson plan! A few things that you may want to include is the use of other search engines for the students to use. So many students are familiar with the engines "Google" and "Yahoo" already. Here are a few that Marlo has listed as good search engines for students in his lesson "Researching the Information Highway." Ask Jeeves for Kids, Kids Click and OneKey are a few aimed specifically for youth, but as your lesson deals greatly with science you may want to also consider Educational World, Search Educational Institutions and EduHound. One thing that I really liked about your inclusion with your lesson and the Internet is that you want to make sure that students back up their information by using multiple websites. A good way to make sure that students realize that not everything that is on the web is 100% true. Overall a really good job! Lisa McGee