Presentation on theme: "“Bringing Live Science to the Classroom”"— Presentation transcript:
1“Bringing Live Science to the Classroom” This zebrafish project is a way of bringing live science to the classroom
2A zebrafish is notA litte humor. But definitely before the project starts, find out what your kids think a zebrafish will look like.
3Meet the Zebrafish male and female wild type female albino The wild type Zebrafish shows pigment while the albino does not. 6th grade and up will introduce their classes to both types. K-5 will only work with the wildtypefemalealbino
4Pre Lab Preparations Packet Labels Pre-Test Design a zebrafish Here is what you will need to do to prepare for your week with the Zebrafish.Before Anita begins on Day 1, be sure to have your students complete the pre-test and with the ID #’s on them. You will use those same ID #’s to the same students on the post test at the end of the week. This packet containing the tests w/ ID #’s and a parent letter will be sent to you a week before Anita comes to your class.You can also have your students Design a zebrafish: copy from your teachers manualAll of this Pre-Lab Preparations info can be found in the Pre-Lab section of your binder. This will help you and your class to be ready for your exciting week, as well as being helpful for Anita when she comes in.
5Welcome to BioEYES This week you will be working with zebrafish. You will learn about the similarities and differences between zebrafish and humans.You will learn the importance of zebrafish to the world of science research.Prior to Day 1, you could also see what your students know about scientific research. See what their background is like, if they can make any connections.
6Why Zebrafish? They have a heart, eyes, and blood - Just like us! Zebrafish develop optically clear, so you can see their internal organs when looking through a microscopeThe mother zebrafish can lay hundreds of eggs at one timeThey develop quickly - much faster than us!After my week with the zebrafish, I take this a step further and make Zebrafish our research project. “Why study Zebrafish” becomes a required component in that project.
7What are Zebrafish? Most have black stripes and black eyes Zebrafish are tropical, freshwater fish.They are native to the Ganges River in East India and in South East Asia.They will eat small living organisms like brine shrimp and vinegar eels.They are eaten by larger fish, birds, and amphibians.They grow to about 1 – 2 inches long and live two-five years.Most have black stripes and black eyesThey are kept by hobbyists and used in laboratories to learn about living things.Again, students are required to use this information on their research display board. We also talk about the order of our paragraphs and why this one usually comes first.
8Scientific Method: Experimental Process Here are the traditional steps in following the scientific method.
9This organizer can be found in your binder This organizer can be found in your binder. Remember that there are different levels of science inquiry. For all the grade levels, the focus/question that is being asked each day is guided. I believe The 6-12th grades takes it a step further and formulates a question and hypothesize the types of zebrafish that hatch by the end of the week.
11Today we will learn the function of the environment and how it effects humans and Zebrafish. Anita will lead the class in a comparison a human’s environment and the environment of a zebrafish. During this discussion is when I usually chart students answers. Everything that I chart during this week, stays up in my class pretty much for the rest of the quarter, because of the research portion. The vocab stays up all year.
12Day 1 City or Town Seasons Industrial Tropical Environment Hot Humid Plant lifeCity or TownSeasonsIndustrialZebrafishWaterFoodShelterOxygen - use gillsHumansOxygen - use lungsHere is an example of answers from a class discussion. (Over here – point to chart- is my classroom chart of answers from my class this year.) The top here shows the environment of the Zebrafish and human. Below each are the needs that each environment provides. While I am charting students answers, the students are also responsible for writing these answers down on their Day 1 chart found on page 4 in their Agent Handbook.
13Day 1:Setting “The Stage” In your Agent Handbook pg. 5:How are the fish acting?Can you tell which one is the female/male?Make a sketch of each.What you are going to do:Put the insert inside the tank. (note the slits in the insert. Discuss why.)Fill the tank about half way with water.Use a fish net to capture a male from the designated container.Do the same to capture the female.Put a piece of tape across the top of the lid indicating the # of the container you got your fish, your name and names of your Zebrafish.Prior to Anita coming in to you class this day, its best if you arrange your room to have 3 stations where all this equipment is easily accessible. For lower grade levels, you may want to get extra help in your room that day so you have 1 adult at each station. So Anita will go through these directions with your class. Once students have their mating tanks set up and have some time observing them, be sure to redirect their attention to Page 5 to record their observations.
14Day 1: Observations Who is the male fish? Who is the female fish? torpedo shape, orange belly (from eating brine shrimp)Who is the female fish?protruding belly, silver colorTopics to discuss:external fertilizationbehavior in the tankDuring this discussion, again I would chart student responses.We discuss Behavior: female fish chases male, he has to prove to her that he is strong.Here, you will want to point out that The zebrafish reproduces externally. We explain that when the female fish feels comfortable she will release her eggs, which passes through those slits in the insert. Then, the male will release his cells to fertilize those eggs. Depending on the grade level, there might be a short talk about how genes are passed on. Grade 6 – 12 will take this a step further and discuss more in depth about genetics.
15Day 1: Observations Wild Type Albino black stripes black eyes can make pigmentAlbinono stripesred eyespale colorcan not make pigmentThis slide is more for 6-12 graders.You can either go over physical traits of the fish before you hand out the tanks or after.Questions:What is the big difference between the two fish?Why does the albino have red eyes? No pigment, see the blood
16Day 1: Observations in student handbook draw pictures and write complete sentencesWhat do the fish look like?Who is the female fish?Who is the male fish?What is their behavior?After we have our discussion of what we observed, I give my students time to finish/make any adjustments on pages 4 & 5 in their handbooks. I really stress to my students to take their time and make a good sketch. As you can see here, this student first had what they thought was the male and female on the wrong sides and she corrected it. Also, after stating that I would not accept the sketch of an oval w/ the triangle tail, she also made those corrections.
17Create an ExperimentToday you were introduced to zebrafish. You learned that zebrafish are important to scientists because they are similar to us. In today’s class we set up a mating tank with a male and a female zebrafish. Our fish had very different characteristics, can we create an experiment using what we learned today?Again – 6-12 grades
18Scientific Question and Hypothesis Scientific Question: What will the offspring look like?Hypothesis: create your ownPossible Hypothesis: If I mate a female striped zebrafish with a male albino zebrafish then the offspring will look half like the mom and half like the dad.Slides for 6-12 grades(This can be written in the observation section of the journalLet them all create their own, writing it in an If then statement form.)
19Day 1 Vocabulary Habitat Tropical Environment Seasons Experiment ProblemHypothesisGeneticsCharacteristics and TraitsPigmentZebrafishAlbinoHere are possible vocab words to use in your class, depending on the age. My vocab chart is located there…
20Science Notebooks: TEACHER SIDE-left What do you think about implementing BioEyes into your classroom?Do you have any concerns?STUDENT SIDE-rightWhat did you find most interesting about today?What do you think about this project so far?Remember those Science notebooks you created at the beginning. I would like you to take those out.(I would like you to think of the left side as the teacher side. This is where you can write down notes each day. In addition, I may give you a question or two to reflect on that I will read each night and give back to you the next morning). I would like you to think of the right side for your students. Through this week, I would like you to use that right side to write any questions that you would ask of your students to reflect on in their notebooks. In addition, I will share a couple of mine each day. Feel free to copy them or if you would like to respond to them too, you may.
22Day 2: Review of Day 1 Who was the male? female? What were their physical traits?What was your scientific problem?What was your hypothesis?Quickly recap day 1. obviously bullets 2 – 3 are for the upper grade levels.
23Day 2 Day 2 objectives: Collect embryos Learn new lab instruments Learn how to care for your zebrafish embryosCount embryosLook at the development using a microscopeWhen the educator arrives in the classroom he/she will disassemble the black box.Today is your busiest day. If you can, depending on your grade level and students, recruit extra help.
24Day 2 What do embryos need to survive? Humans NeedFood - from momWaterShelter - momProtection - momWarmthZebrafish NeedFood - yolkShelter - shellProtection - shellHere is our focus of the day that students put at the top of page 6 in their handbooks.Again, during this class discussion I am usually charting student answers and they are responsible for completing their chart in their student handbook. Here is my classroom chart from this past year.Stress how they need the same things, however receive them differently.Humans get all protection and food from their mother as they are carried to term for 9 months
25Day 2 Collecting the Eggs First the students will put the fish back into their respective tanks. They will then lift the top part of the tank out.Then they will pour the water in the mating tank through the white net which will collect the eggs while letting the dirty water run through the sieve and into a bucket or sink.Once the eggs are collected, they will be rinsed into a Petri dish with embryo medium. The medium provides the oxygen, nutrients, and aqueous environment necessary for the embryos to develop.Students should keep the lids on their Petri dishes as much as possible to prevent contamination and accidental spillage.Once they are back at their seats with their petri dishes, students put tape across the top of their lids and write their names on them.Today is a big day. I encourage you to recruit adult helpers on this day. Depending on time and grade level, you can even demo to the class and have Petri dishes for the rest of the groups already prepared.
26What is an embryo? An embryo is a stage of development What are the parts of an embryo?What is the functionof the yolk?Chorion ________During this discussion, I usually chart this.Embryo_________Yolk___________
27Day 2 Good Embryos Bad embryos and eggs Embryo Care Teach students the difference between a healthy, fertilized viable embryo, an unfertilized egg, and an embryo that will not developBy using a transfer pipette remove the bad eggsPutting your Petri dish on a black background will help you determine what eggs are healthyIt is important to remove all things that are not healthy developing embryos.Good EmbryosStudents are back at their seats at this point. If I can, I try to show students using the projector microscope 2 eggs, one good and one bad and see what they think. Bad ones are usually Cloudy, milky white eggs need to be removed. It is during this time that I demonstrate to students how to use the pipette.Healthy, viable embryos will look like eye balls rolling around petri dishWhy take out all bad stuff? It will attack the healthy embryosBad embryos and eggs
28Day 2Each group should carefully bring their labeled Petri dish to the microscope to look at the developmentBy using the development chart, the student can determine a relative time of fertilizationCount how many embryos you have in the dish after cleaning is done. (see diagrams in the binder)On page 7 in the handbook, students are to make observations of what they see. In the blank space, have your students sketch one embryo they see. Stress that they should try to be as detailed as they can. When they are back at their seats, have them count the embryos. To help them, use diagram 1 or 2 from the “Bar Graphing Activity” page in the activities section of your binder. When they describe in words what they saw, have them write how old they think their embryos are using the data chart – next slide.
29Day 2I give my students a similar handout for them to keep throughout the week. This is a resource they use each day to see how their embryos are progressing.
30Today we learned the function of the embryo and how it is similar and different in humans and zebrafish.
31Just to Recap Day #2 Before checking on tanks: 1.Discuss similarities & differences of embryos between the zebrafish and humans.- Give basics of zebrafish embryo and let the students enhance their knowledge through their observation under the microscope. This keeps it more science inquiry base.2. Demonstrate how to collect eggs3. Students collect eggs
32Recap of day 2 continued…. Whole class: discuss good/bad eggs, introduce new equipment, embryo parts.Students go to microscopes & clean the petri dishes.After students look through microscope:Sketch 1 embryo (in handbooks) – during observationIdentify parts of an embryo & labelWhat stage of development was yours at?Could you tell the good from the bad eggs?Whole class discussion *** (extra)What did you see?How many eggs did you record?Teacher shows a picture/drawing of an embryo and have students identify the parts.
33Day 2 Vocabulary Embryo Yolk Chorion Microscope Petri dish Pipette Fish Medium
34Science Notebooks Teacher Side (Left) Student Side (right) Write a reflection about today.Do you have any concerns or questions you would like me to address?Student Side (right)Make a detailed sketch of an embryo and label the parts.How old did you thinks your embryos were today? Why?
35Day 3REMEMBER Day 3 & 4you are by YOUSELF!DON’T PANIC!
36Day 3 Objectives and Activities Learn how zebrafish breathe Learn how humans breatheClean Petri dishObserve embryos under microscopeCount embryosplace Petri dish over a grid
37Day 3 What are gills? What do they do? Gills are what most fish use to breatheThe gills are part of the respiratory systemWater passes through the gills where blood vessels called capillaries allow oxygen from the water to move into the bloodThe capillaries also allow carbon dioxide to pass from the blood back into the waterStudents can fill in Day 3 activity on Page 9
38Day 3 What are lungs? What do they do? Humans use lungs to breatheWe breathe air into our bodies through our mouth and nose which leads to the lungsThe air ends up in the 600 million alveoli in the lungsAlveoli allow oxygen from the air to pass into your blood through capillary walls to enter the bloodThe heart then pumps the oxygenated blood throughout the bodyIn your binders, under the activities section, are 4 good handouts you can use to help you this day.
39Now you Know!Question: If there is oxygen in water, why can’t humans breathe underwater?
40Now You Know!For humans to breathe underwater oxygen must move from the water into the blood. This takes longer than when oxygen moves from the air into the blood.Gills are specialized to handle the slow movement of oxygen. Our lungs can’t pick up oxygen from the water fast enough to keep us alive, which is why we drown if we try to breathe underwater.
41Today we learned how zebrafish have gills and humans have lungs.
42Day 3: ObservationsAt the microscope students should look at the embryo developmentAre there any changes from yesterday?Draw what you see under the microscope in your journalCount embryosStudents may start noticing movement within the chorion, a noticeable head and tailStudents can start their zebrafish story on Day 3
44Science Notebooks: Teacher Side: Student Side: Have you thought about how you might extend this project with you class? If so, please share.Questions/concerns?What new developments did you notice today?Where do you think your embryos are in the development chart today?
45Day 4 Objectives and Activities Learn how zebrafish and humans have many cellsLearn what DNA isClean Petri dishObserve embryos under the microscopeAny noticeable characteristics?Count embryos (Have any hatched?)Hatched embryos are now called fry
46Day 4All animals, including fish and humans, are made up of trillions of cellsThe cell is the smallest building block in our bodyAll animal cells have structures in them called organelles to carry out the duties of the cellUnder the activities section of your binder, there is more information that can help you lead today’s focus.
48Day 4OrganellesNucleus - contains DNA (deoxyribonucleic acid) and controls all cell function.Mitochondria - Changes sugars into energy for the cell. The energy is called ATP (adenosine triphosate).Lysosome - Digests all nutrients delivered to the cell. Blood then carries the nutrients to each and every cell throughout your body.
49Day 4What is DNA?DNA carries the instruction that tells our cells how to functionYour DNA comes from your mother and your fatherThe study of DNA is called geneticsScientists study genetics to better understand diseasesYou have so much information in your DNA, if you listed it all you would fill 200 telephone booksAll of that information comes from just one cellHumans have trillion cells
50Today we learned that zebrafish and humans have many cells.
51Day 4Be sure that your students are keeping up on their handbooks. Here is an example of 2 diagrams your students could do.
52Let’s Check Our Petri Dishes CleanCountSketchFill in classroom chart on board
53Day 4 Day 4 Vocabulary Cells DNA Mitochondria Lysosomes Nucleus GeneticsATP
54Final Reflections Teacher Side: Student Side: What day did you find most exciting so far? Why?Have any of your previous thoughts or concerns changed now that you have experienced this program hands-on?Make a detailed sketch of what your embryos look like today.Now that you have learned a bit about your genes:Describe one/more traits that you received from your mom/dad.
55Day 5 Final results and conclusion What happened during Day 3 and Day 4 of development?What characteristics have you started to notice?Does anyone have any hatched embryos?book term is “larvae”
56Heart Zebrafish 2 chambers Humans4 chambers2 atria2 ventriclesRight side pumps blood to the lungsLeft side pumps blood to the rest of the bodyArteries - away from the heartVessels - to the heartZebrafish2 chambers1 atrium1 ventricleHeart pumps blood through the gills as it travels to the rest of the body
57BloodHave you ever wondered how does oxygen reach our cells in our body?HemoglobinA protein that transports oxygen to all the cells in our body
58Comparing human and zebrafish hearts These handouts are also in your binder
64Conclusion What do your zebrafish look like? What traits got passed down?Are there any conclusions that can be made?Is one trait stronger then the other?Look back to your hypothesis, were you correct?Is it okay of your hypothesis was not correct?All fry should be striped, showing the dominat trait
66Teacher Manual Supplemental Information Activities Color a Zebrafish ActivityScientific Method HandoutGills vs. Lungs comparison chartWord SearchZebrafish StoryCrossword PuzzleFill in the blankBar GraphJello 3-D CellSupplemental InformationHow to raise your zebrafishAALAS article on “Pets in the Classroom”Background genetics information with activity
67Writing Map for Zebrafish Story Story TitleCharactersSettingProblemEventEventEventEventSolution