Monday, May 23, 2016

IB Physics Example Videos

It's taken about 2 years but I've finally finished a set of IB Physics Example Videos! (131 of them to be exact!)

The whole process started years before that when I found myself frustrated by how much content there was to discuss/apply/investigate in IB Physics and how little time there was to get it all done. My solution is to take most of the examples that I would normally do in class and record them as example videos for the students to watch before they attempt their homework.

I find that this frees up anywhere from 10-30 minutes per lesson! We have so much time available now that I've restructured my whole lesson plan:

  • First 10-25 minutes - Unstructured time for students to address their individual needs:
    • Get help from peers or teacher on homework questions or unclear topics
    • Read Ahead
    • Investigate Extension
    • Meet to discuss performance, study skills, etc
  • Remainder of the lesson - Lecture, Prac, Investigation, Groupwork, etc on new content
  • After the lesson - students watch example videos and attempt homework. They flag the questions they get stuck on and return to the next lesson to get help

Some topics have more examples than others, but every required HL and SL topic (and the HL/SL Astrophysics Option) has some examples. If you think something major is missing let me know but I don't think I'm going to be returning to this video set for a while. I'm on to my next challenge: starting up an IB Computer Science class!

If you are an IB Physics student or teacher feel free to use these example videos as you see fit.

Thursday, May 19, 2016

IB Physics Extension

One of the things I like to do in my class is allow students some time at the beginning of the lesson to help each other with their homework questions. The challenge, though, is making sure that students who are on top of things and aren't busy helping others can still be productive during that time.

To that end, I've compiled a collection of IB Physics Extension pages. The idea is that for whatever part of the syllabus your students are currently working on, there's some kind of related, self-guided extension that they could explore. It might be:

  • An interesting article on related science
  • A really tough problem
  • A thought-provoking video or application
  • A neat simulation

Just this week I've finally complied enough pages that there should be at least one page for any lesson in the IB Physics course, so no matter what lesson you're on you could always refer a student to the collection of extension topics.

You'll find all the pages here:!742&authkey=!AO1VuIbAaVJkrkc

I find that I get the best uptake on this extension if I spend a minute of class time introducing a page or two before students break out into their work.

The collection is still growing so let me know if you spot something neat you think I should add!

Wednesday, February 10, 2016

Free Linear Graphing Template for the 2016+ IB Physics Syllabus

Download the Free Version of the IB Physics Graphing Template for 2016+ Here!

Enter your Data and Uncertanties and Let Excel Draw your Graph!
IB Physics Students Graduating in 2016 and later face a larger and more sophisticated Internal Assessment (IA). When it comes to making Linearised Graphs, the biggest difference is that students should now consider all their data when drawing best-fit, max, and min trendlines. 
Fortunately, I've updated the IB Physics Graphing Template to help do just that! Now when it calculates the max and min trendlines, it will search through every possible combination of corners of your data and select only the most extreme slopes that pass through all your error bars:

The Max and Min Trendlines consider all data points.

That's not the only update. Based on my experience with my own students, I've added a slider to adjust the number of significant figures reported in the trendline equations:

You can adjust the number of Significant Figures in the trendline equations.
The last big update is that the template now offers you feedback on your graph and data, to help you spot mistakes, make your analysis, and draw conclusions! For example, the last data point in this graph appears to be preventing any straight line from fitting through all the error bars:

The last data point appears to be preventing any straight line from fitting through all the error bars
To help students catch these issues, the template offers feedback:
The above error is automatically generated to let you know that something has gone wrong with your graph

Anyone can download and share the free version of the template which offers all the above features forever for as many graphs as you like. If you are a Physics teacher, you may be interested in purchasing a school-wide license for the full version which offers two extra features:

Additional Full (Paid) Version Features:

  • Demonstrate Animated Graphs (like the video at the top of this post)
  • Receive further feedback beyond error messages. How much frustration will you save if your students were automatically reminded of key bits of information like:

Example of Additional Feedback available in the Full (Paid) Version

Example of Additional Feedback available in the Full (Paid) Version
The full version comes with a school-wide license that doesn't expire, or require account management. Just share the file with your students like you would any other file. You can purchase the full version from the store in the upper right hand side of this page.


Operating System Compatibility:

No matter what your operating system is, your going to need Microsoft Excel installed. The template will not work with other spreadsheet software like Numbers, Open Office, or Libre Office.
The template works very well in Windows, and acceptably well in Mac OS although I would suggest you download the free version to test functionality on your system before buying a full version license. Linux is untested at this time.

 Because this template has a lot of new, sophisticated functionality, it wasn't possible to build it without Macros. Macros are extra bits of software written by the spreadsheet author (me, in this case) to add functionality to the spreadsheet. You must enable macros to run this software. If in doubt, talk to the IT department at your school.


 I'm not able to offer a guarantee of support but I will do my best to help you out if you have problems. Just post a message in the comments below and I'll get back to you. I'd recommend you check out the free version before buying the full (paid) version to make sure it meets your needs.

It's Running So Slowly!

In my experience the process of drawing the graph takes quite a while if: your on a Mac, you have a lot of data, or you are animating the graph. To keep things running smoothly, consider un-checking the "automatically generate graph" box. Once you've finished entering your data and uncertainties, then click the "generate graph" button. This way, nothing happens in the background until you're ready.