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Consumer Science Experiments

8/11/2020

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Want a new way to review the scientific method and variables at the beginning of the school year? Try having students conduct a consumer science experiment! In this lab students will chose two products that they use in their everyday life and design an experiment to test it's effectiveness.

What's great about this experiment is:
  • Students don't need to buy any supplies. They can choose an experiment based on what they have at home (great for distance learning!)
  • Students are allowed voice and choice.
  • You can assess which students are able to design and conduct a controlled experiment.

Possible experiments could include:
  • Which brand of paper towels is most absorbent?
  • Which brand of chewing gum has the longest lasting flavor?
  • Which type of grocery bag can hold the most weight?
  • Which type of glue is the strongest?
  • Which type of cup keeps my drink cold the longest?
  • Which type of bread molds the fastest?
  • Which type of packaging supply- bubble wrap or packaging peanuts- best protects the contents of my package?
  • Is SPF 50 really stronger than SPF 30?
  • Which brand of soda has the most carbonation?
  • Which brand of nail polish chips first?
  • Which brand of popcorn has the least amount of unpopped kernels?
  • Which brand of soap produces the largest bubbles?
  • Which brand of candle burns the longest?
  • Which type of clothes material dries the fastest?
  • Which brand of cereal stays crunchy the longest in milk?
  • Which brand of chips has the most air space inside?
  • Which brand of bandage sticks the longest?
  • Are ziplocks more leak-proof than store brand bags?
  • Which brand of stain remover works the best at removing stains?
  • Which brand of cleaner is better at cutting through grease?
  • What is the most effective way to ripen fruit?
  • Or, have students choose their own experiment but get teacher approval before beginning.

Prior to "setting students loose" with the task, I would remind them to only choose ONE variable, and review what a controlled experiment is. For example, if they choose to test paper towel absorbency, they need to make sure the two paper towels are the same size. Also discuss the need for multiple trials to get accurate data.
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You have a few options for students to submit their work:
  1. You can have students record their experiment results and submit the video- flipgrid is a great option for this.
  2. You can have students fill out a CER chart (highly recommend!)
  3. You can have students write up a formal lab report (although I wouldn't choose this option if you are just kicking off the school year).

Inevitably you will have students that changed more than one variable, didn't have a control, made measuring errors, etc. You can always give them feedback and request the repeat the experiment with needed improvements. This is a great learning opportunity for them, and they will understand that the nature of science is to always go back to the drawing board and improve on prior experiments.

Have any other consumer science labs you love to do with students? Leave them in the comments and I'll add them to the list!

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Utilizing Live Streaming Webcams

6/12/2018

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live-streaming-websites to use in your science classroom
We live in the world of technology and instant streaming. It's amazing that we can see and talk to people on the other side of the world with almost no delay. I recently came across a couple of live streaming websites where your students can observe nature and wildlife from locations around the world. Many of our students may never have the opportunity to see the great barrier reef or go on an African safari- but that doesn't mean they can't enjoy looking at the animals from afar! I've created a list of a few websites where students can observe live streaming from some pretty cool places:
Deep sea exploration- nautilus live webcam
1. Deep Sea Exploration: Head over to http://nautiluslive.org/ to see real time deep sea exploration! Students can even type in questions and organizers are willing to skype with your classroom!

Live webcams from explore.org
2. Explore.org: Out of all the websites, explore.org is probably my favorite. You can click on tons of animals and it will take you to a live streaming location. Sometimes you won't see much, but that is the nature of it being live. It will recommend which animals are most active and has highlights you won't want to miss.

Live webcams from the National Park Service
3. National Park Service: This website has links to some webcams within some of the US National Parks. (Many of these are also available on explore.org, so you may just want to start there).

Live webcams for classroom use from national zoos
4. Zoos: Many zoos such as The Houston Zoo, the Woodland Park Zoo, and  the Monterey Bay Aquarium have webcams within their exhibits for you to view. You can even take a turn controlling the webcams at the Houston Zoo!.

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5. The ISS: Teach astronomy or have some future astronauts in your class? Have them observe a live stream of astronauts living on the ISS!

Ideas of how to use these websites:
1. If you are teaching a lesson on making observations, have students observe the animals, write down behaviors they see and make inferences about their lifestyle or habitat.

2. Are your students quietly working on an assignment? Many teachers play background music. I personally struggle with this, because I'm one of those people that has to have it quiet in order to focus. Instead of playing music, try putting up a webcam on the screen. It allows students to take small mental breaks to observe the animals, and is also gives the early finishers something to do instead of pulling out their phones. It's a great classroom management tool.

3. If you are teaching about conservation or sustainability, put up a webcam and discuss why animal conservation is important and the ethical implications of zoos.

4. Don't have the money to take your students on a field trip? Use these sites as a "virtual field trip." They can see a national park from your classroom!

I hope you enjoy these sites! I've wasted my prep hour a few too many times by sitting and watching animals! Enjoy!
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Physics Lab: Build a Parachute

3/7/2018

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Physics Lab: How to build a parachute
Physics is really exciting to teach because there are so many fun labs you can do. After teaching students about speed, velocity, and acceleration I wanted to do a STEM lab to follow up the unit. I decided to have students build a parachute out of a plastic grocery store bag and gave them a goal of keeping it in the air as long as possible. It was not only fun for them but the materials were super inexpensive! I supplied string and tape, and they had to supply the bag and any other materials they wanted to add. You are welcome to set size or material restrictions but I chose not to. I gave them one class period to build (if they didn't finish they had to finish at home) and we tested the following day. When testing the parachutes I tied a GI Joe to the bottom to add some mass but you are welcome to use whatever you have handy (metal washers work great too). 
Parachute lab testing
Parachute lab testing
Parachute lab testing
Parachute lab from Science Lessons That Rock
Our school is 2 stories so the students dropped their parachutes from the 2nd story. When they went to drop the parachutes they had 1 rule: No throwing the parachute up in the air. They had to hold their hands straight out horizontal and drop straight down.
 
Each group got to drop their parachute 2 times. They had to calculate the speed of the drop (distance / time) and acceleration (Vf - Vi) / t. Overall they had a blast and I had some silly prizes for the winner of each class period. If you would like to check out the lab worksheet I used CLICK HERE. Have fun!

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Secondary Science Virtual Labs

2/21/2018

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Secondary Science list of virtual labs
Virtual labs are a great tool to try if you have computer access. I love them because:
  • They are FREE! If you are tired of spending your own money on lab supplies, throw in a virtual lab instead. 
  • They are great for visual learners.
  • If students mess up, they can start over with no pressure
  • They give you a small break from stressful wet-labs. 

I've compiled a list of websites that have virtual labs. Many require Flash or Java software, so be sure your computers have it before trying with students. If any of the links are broken or out of date, please leave a blog comment and I will update. 
  1. Glencoe Labs: The Biology Corner website has a list of every Glencoe virtual lab ever created. It is broken down by science discipline. It's the mother-lode! *Note- these require Flash*
  2. Phet: This website from University of Colorado has a ton of simulations. This website is especially great for physics and chemistry teachers. It even includes free downloadable handouts and worksheets you can use with the simulations.
  3. NMSU Virtual Labs: This site has 8 virtual labs for biology and chemistry. 
  4. HHMI Biointeractive: This site has virtual labs that tend to be better for honors/AP students.
  5. Learn Genetics: University of Utah's Learn Genetics site is great for all things genetics. They also have 4 virtual labs that deal with DNA. 
  6. Virtual Dissections: Resources are broken down by animal 
  7. California State University: Has a list of virtual labs broken down by content area
  8. Physics Labs: This site has a list of labs just for physics teachers
  9. Molecular Workbench: Has 100's of simulations for all content areas
  10. NOVA Labs: Includes virtual labs on the sun, energy, RNA, clouds, and evolution.
  11. Bioman: Games and virtual labs for biology
  12. Tragedy of the Commons Labs
    1. https://blossoms.mit.edu/legacy/tragedy/index.htm
    2. https://www.ecoocean.de/play-online/
  13. Evolution Virtual Labs
    1. http://biologyinmotion.com/evol/index.html
    2. https://www.pbs.org/wgbh/nova/labs/lab/evolution/
  14. Blood Typing: In this virtual lab students learn how blood typing works and they need to select which types of blood can be used in a transfusion.
  15. Chemistry Simulations: From Oneonta University
  16. Virtual Titration: Great titration practice before doing the real thing in your chemistry class.
  17. CK-12: Has chemistry and physics simulations.
  18. My HRW Simulations
    1. States of Matter Simulation
    2. Photosynthesis and Respiration
    3. Ecology
    4. Punnett Squares
19. Cell Homeostasis osmosis lab
20. Lab Safety Interactive
21. Virtual Biology Labs- labs for ecology, evolution, and cells
22.JavaLab- This site has tons of simulations sorted by topic. It's got some great stuff!
Enjoy! If you know of other sites, please share in the comments!
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Making the Most of Computer Lab Time

12/22/2016

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Blog Post: Making the most of computer lab time
I love when I find a new website or online activity I want my students to try. Our students are growing up in a technology reliant generation, and as teachers we need to tap into their interests and strengths. But every time I go to the computer lab, it seems like some kids whiz through the activity I want them to complete, and other students are constantly calling me over for help and don't finish by the time the bell rings. The students that finish early inevitably end up on facebook or youtube as soon as your back is turned.
Add fun science links on your classroom website
Add fun science links on your classroom website
One way I have battled the "what do I do now that I finished early?" problem is by creating a link on my classroom webpage that students can go to. Every time I find a fun, appropriate science website, I add it to the list. (If your school doesn't provide you with a school webpage, there are a lot of blog websites out there you can easily set up).

When students finish early, they are allowed to go to my school website and select from any of the links there. If you make sure the links are fun and interactive, students won't complain. I've found fun websites where kids can design roller coasters, complete a Rube Goldberg machine, dig up fossil bones, and even complete virtual dissections. They will be learning and having fun at the same time. Also, when the librarian walks over and takes a peek at my class, she won't be seeing my students on facebook. It's a win-win!

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STEM- Making Animated Videos

11/27/2016

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Making animated videos on scratch.mit.edu
Lately there is a big push for STEM in the classroom. Data has projected that STEM related jobs will increase to 9 million by the year 2022 (www.bls.gov). As teachers we need to not just teach science, but let students truly experience it first hand.
Every year when I teach cells, students do a good job memorizing what the organelles do but have a hard time understanding how the organelles actually work together. I wanted my students to really visualize cell processes and how the cell functions as a whole. I came across a website from MIT that allowed students to create animated videos. I decided I was going to have my students create a video for a specific cellular process. This project can be scary for many students that aren't tech-saavy (although most students are better with technology than we are!) To ease their minds, I let students work in pairs- one student could do a lot of the research and the other student could do more of the video building. Next I came up with a list of 15 different cellular processes (endocytosis, mitosis, DNA replication, etc.) that they could pick from. I have class sizes around 30 students so each group had a different topic for their video. This project could be used for any topic, not just cells!

Here are a few tips that will make the project run smoother:
1. Before you assign the project, play around with the website yourself. It was also helpful for me to watch youtube tutorials (like the one HERE) as I was learning. If you are familiar with the website then it is easier for you to help students when they hit road blocks... which they will.

2. Students will need to create a login for their video. I told students to use their school ID number as their login and their school password. Many students have multiple usernames for their emails and social media accounts, so I didn't want them to forget their login. Also, when students shared their videos with me I could see whose video it was based on their ID number.

3. Before students begin, have them map out what they want their video to look like. I gave them a storyboard timeline worksheet (see image 2 below) and made them draw out their cellular process and write captions. I had to check and approve their worksheet before they could begin working on the video. It was a good way to check in with them and give them feedback to ensure they weren't missing anything.

4. Allow students to look around at videos that are already made. On the scratch homepage you can search for videos that other people have shared. If you find a video you like, you can click See Inside (see image 3 below) and see how they actually built the video. I made it clear that students could only look there for ideas, but couldn't copy what other people made.

5. It will take time, and get ready for the whining. If I had a dollar for every time I heard "can't we just make a powerpoint instead?" I would be going to a steakhouse for dinner tonight courtesy of my students. One student even said "Come on Mrs, we've been making powerpoints since we came out of the womb!" That is exactly why I didn't let them make a powerpoint. In the end (I gave them a week), they came up with some awesome videos. The great thing about this site is they don't have to be at school to work on it, just anywhere with an internet connection. If they don't finish in the assigned class time, they can work on it at home.

6. Chances are you will have a group or two that just can't figure out the website and how to make things move and work. As a last resort for these groups, I showed them how to make it "powerpoint-like." When you click on the "backdrops" tab, you can create multiple backdrops, which is essentially like powerpoint slides (see image 4 below). Then all they have to do is add a script that when the space bar is clicked, it moves to the next backdrop. 

7. When students are finished, they need to click SHARE before the video goes live (see image 5 below). Once they clicked share, I had them copy and paste the URL into an email and send it to me for grading. I made it clear to students that the majority of their grade would be based on the video content, not the animations. For example, if the mitosis group had awesome visuals but forgot to tell me about what mitosis is, why cells divide, and which cells undergo mitosis then they wouldn't get a great grade. That lowered the stress level for students who struggled with the animations.
Even though both teacher and student felt frustration at times, I'm so glad I had my students create these videos. Below is a sample from one of my students. Enjoy!
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    Becca 
    The face behind Science Lessons That Rock

    I'm a teacher, blogger, and curriculum writer.
    I've been teaching science for 12 years at both the middle and high school levels.

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