Featured pages & news
Have you seen this?
This page is here as medium for letting you know about some new resources and reminding you about some pages and resources we have on the site. As the site gets bigger and bigger, even we, as authors, need to remind ourselves what is here! Most of us don't have time to browse and so we thought we would try to provide some regular reminders here along with new pages and news about the site. New entries go at the top. This page used to be called 'Site Updates' and there is an archive, Updates Archive here of those. We changed the name and purpose to 'Featured Pages' on 2nd July 2023.
Updates, reminders and notices
June 2204
Here are some updates from this June!
Chi Squared - Combining Categories
When expected frequencies are too small. This activity covers the issue of what happens when expected frequencies are too small. When this happens, the probabilities no longer follow the chi squared distribution...
Temperature Modelling
'Can you model, then predict, what life will be like, based on the climate, in: Thailand, Norway, Canada, Australia and Saudi Arabia?'The below spreadsheet provides data on the climate in five cities...
Qbank HL Complex N° Electricity
The qbank is live and available from the Homepage by clicking on 'Student Access' (top right panel) then 'qbank' (screenshot below). This question set is focused on complex numbers.HL Complex Number Voltages...
May 2024
As May exams come to a conclusion, class goes on for the IB first years. I am teaching hypothesis testing at the moment and have just made this activity, Samples Apples & T-tests, to introduce the idea of a T-Test based on taking samples of apples. The goal is to offer a concrete experience of taking samples where this is the best we can do because whole populations are too big to handle. I will follow this up with this similar activity Goodness of fit samples - Cinema Tickets and I am working on one for the chi squared test too.
Samples Apples & T-tests
Thinking about samples and T-tests In this activity you will work with different populations of apples. The goal is to take lots of samples from those populations to understand that variation occurs naturally...
Goodness of fit samples - Cinema Tickets
What do the samples tell us?In this activity we will examine a variety of different samples from a couple of different populations to explore the notion of the chi squared goodness of fit test and how...
April 2024
I have just added a whole new set of exam style questions for SL Binomial Distribution which you can find on that link in the Exam Style Questions section. they come with worked solutions and are a good spread of the kinds of things expected for SL Binomial calculations.
March 2024
May Schools are gearing up for Internal and External assessments so it seems like a good time to remind everyone of the pages below. I have just added this Trampoline Bounces marked example to the SL Marked Example Explorations page to go with Basketball angles and Vinyl Revival. I have also been updating the IA Writing Guide in the Internal Assessment Center - For students so that I can be efficient with my time with students!
16th March - here is a new one filling a gap at 16/20 - Swimming Speeds
Internal Assessment
Everything you need to successfully navigate the Internal Assessment process!At 20% of your final grade, there is little need to persuade people how important this task is. You can make a big difference...
SL Marked Example Explorations
The Internal Assessment element is a terrific part of the course with so much value in different areas. At the same time it brings a good deal of work for teachers who have to help, direct, manage and...
External Assessment
This section of the site is about external assessment. The first exams for the current syllabus took place in May 2021 and given the significant changes that place a big focus on applications and some...
December 2023
2 sample T-test practise
Check out these new exam questions for SL 2 sample T-Tests on the SL T-test page. They each set in a different context and come with discussion provocations designed to help classes discuss the issues related to assumptions made for T-tests and the inferences we might make when interpreting the result. Its a good opportunity to dwell in the uncertainty if inferential statistics ans the associated ToK connections!
Don't miss this opportunity to consider relationships, correlation and causation with the 15 Countries and 200 years activity. there is a lot going on here and its a terrific context for introducing key ideas. Also, when we notice the logarithmic scales there is an opportunity to dig around in to logs, log scales and non linear regression
July 2023
Featured pages - As explained above, we have just changed the nature and purpose of this page. The idea is to use it to let you know about some new updates and remind you about some old pages and resources you might have never seen or forgotten about. We will also use it to let you know about site developments. The old page can be found here on Updates Archive.
Choosing courses - Many schools will be busy with helping students and their families with the choice of Which mathematics course? and it is nice to have this page at the ready to share with them. There is a slide show that teachers and coordinators can use and even a video, as well as written explanations that can be read at leisure by anyone. The page is freely available and so the link can very easily be shared.
Higher Level Functions - Higher level teachers will want to see this new HL Revision Pack Functions and Modelling page with lots of resources to help students consolidate their understanding of this topic.
Internal Assessment center - Equally, many of us will be busy with Internal Assessment again and so I'd like to remind you about this Internal Assessment Center - For students which can be shared with your students easily by using the Student Access feature. It is an invaluable source of information, ideas and advice which is written for a student audience and should really help to support you as teachers in managing this element of the course....
Easy ToK and mathematics moments - Use these videos yourselves in some quick moments or tell your ToK teachers about them!
The Mathematics of Love , Maths is the hidden secret..... and Mathematics is Forever