I like to use a lot of video clips in my lessons. Video clips keep students engaged and it breaks up the monotony of the notes. After lots of searching on the internet for good videos for my symbiosis lesson, I've found some real winners! Your students will love these videos!
MUTUALISM- (Good for me, good for you) This video clip is from the 1974 Disney movie "Animals are Beautiful People." Don't let the year deter you, it's an oldie but a goodie. This video clip shows a guide bird helping a honey badger find food. Check it out here: www.youtube.com/watch?v=_88SRgOGnVQ
COMMENSALISM- (Good for me, doesn't bother you) This video clip shows beetles falling into the opening of an elephant foot yam plant. The beetles act as pollinators for the plant, and aren't helped or harmed during the process. Check it out here: www.youtube.com/watch?v=hnbiLvzc13g
PARASITISM- (Good for me, harms you) This video clip shows a freshly hatched cuckoo bird in a warbler nest. The cuckoo bird pushes the warbler eggs out of the nest in order to receive all the food and care from the warbler parents. This is also a great time to introduce innate vs. learned behaviors. Check it out here: www.youtube.com/watch?v=YFtY5D_nYW0
I also like this video that goes over all three types of symbiosis. It is a great follow up video for the following day to help refresh student's memory of what they learned. Check it out here: www.youtube.com/watch?v=zSmL2F1t81Q
Want some fun symbiosis posters to hang up in your classroom? --> Take a peek here! <--
You're giving a big unit test in a few days so you hand the students a study guide. A handful of the students dive in and get it done, while the rest answer about 3 questions and quit. You remind them that it is worth points, so the not-so-interested students wait for their neighbor to finish, take a picture of the completed study guide on their phone, and copy it later. Does this sound like your classroom? It happened in mine all the time. I needed to find a way to get students to WANT to review the material, and study guides weren't cutting it. I started using a variety of review games and puzzles before tests and it has made a world of difference. Student engagement has risen, test scores have risen, and most importantly teacher headaches are a thing of the past. Here are a few games I like to play:
Bingo- This is a great way to review vocabulary. I especially love it for my ecology unit since there is so much vocabulary for students to learn. It's a cinch to create your own bingo cards! Head over to http://osric.com/bingo-card-generator/ and type in your vocabulary words. Choose how many boards you want generated, hit the generate bingo cards button, and voila! For the bingo card markers, I take old construction paper or scrap paper and cut it into small squares. Each student will need about 25 of the little squares to cover their board with during the game. Now the key to this game is to not just call out the words. I call out the definition and make the students cover up the correct word. It will keep them thinking and engaged at the same time. Check out my ecology bingo cards HERE.
Puzzles- Another fun way to review vocabulary. In this activity, students pair up the matching term with it's definition and put them together like a puzzle (see image below). It will take a little time to cut out the pieces prior to playing, but you can use them over and over again. Check out my macromolecules puzzle HERE.
Snakes and Ladders- I like using this game format when doing a trivia review. If you played chutes and ladders when you were a kid, this is basically the same format. The only catch is you need to answer a question correctly before being able to roll and move. If you land on the bottom of a ladder you get to climb up, and if you land on the head of a snake you have to slide down. If you purchase my pre-made versions, you just need the library to print the game boards on large paper and get some dice and game pieces. Students LOVE playing board games, so check out some of them in my store HERE.
It's the beginning of the year, and chances are you are starting off teaching or reviewing the scientific method. If you've looked around on the internet for scientific method labs, you will notice that the majority are not biology related. Don't get me wrong- building paper airplanes, measuring bubbles, and seeing how many water drops can fit on the surface of a penny are fun labs, but not directly related to biology. In my class I want students to understand from the get-go that we are learning about living things, so I want my first lab to reflect that. Here are a few labs that can start your year off right:
1. Pulse Lab- This is a great lab because there are almost no supplies required other than a stopwatch. In this lab students measure their resting pulse, and compare it to their pulse standing up and holding their breath. It is a great way for students to practice writing hypotheses, and identifying independent and dependent variables. Before beginning the lab I start with a class discussion about what your pulse is, why blood needs to be pumped through the body, and where blood cells are made.
2. Firework Milk Lab- I have seen this lab done at ALL ages. Even preschool teachers love this lab. But the beauty of this lab is that high school students still love it, and they can finally start to understand the concept behind the fun swirling colors. In this lab students pour milk into a petri dish, add some food coloring, and put a drop of soap in the middle of the dish. Once the soap enters the dish the food coloring starts swirling and creating "fireworks." The reason the soap begins to mix the food coloring around is because of the chemical structure of the soap. The soap molecule has a polar portion that likes to mix with water, and a nonpolar portion that doesn't like to be around water. The soap molecules react with the fat molecules in the milk and start swirling around, which is visible from the movement of the food coloring. The fattier the milk, the better a reaction you will get. It is fun to have students test whole milk and skim milk and compare the results.
3. Testing the 5 Second Rule- This is my favorite lab to begin the year with, but it requires a little prep work. While you can order sterile agar plates from any science supply site, it is much cheaper to pour your own. If you haven't poured your own plates before, there are a ton of youtube tutorials available to walk you through it. In this lab students get to design their own experiment that would test whether or not food is really safe to eat after being on the ground for 5 seconds. When you purchase this lesson from my TpT store you will get two versions. In the high school version students design their own experiment, write their own procedures, and choose their own independent variable (food type, surface that they drop the food on, etc.) In the middle school version the procedures are given and it walks the students through the lab step by step. If you have an incubator the plates can be ready in 1 day, if not then let the plates sit over the weekend. Students will love seeing how much bacteria is on their food! You can even take it a step further and have students try and kill the bacteria with different cleansers (soap, bleach, 409, etc.) and see which is the most effective.
What other scientific method experiments do you love? Leave them in the comments below!
Becca of Science Rocks
Hi, I'm Becca! I've been teaching science for 10 years at both the middle and high school levels.