• Ishango, Nyakubereka Svomhu (Shona)
• Mathematics or dreams, which is more real (Sepedi)
• Mathematics or dreams, which is more real (IsiXhosa)
• Your post?

• Do plants know math, Stéphane Douady, Jacques Dumais, Christophe Golé and Nancy Pick – a review.
• So simple a beginning – How four physical principles shape our living world, by Raghuveer Parthasarathy – a review.
• The Einsteinian Revolution – The Historical Roots of his Breakthroughs, by Hanoch Gutfreund and Jürgen Renn – a review.
• The Beauty of Falling: A Life in Pursuit of Gravity by Claudia de Rham – a review.
• Datascience for Neuroimaging: An Introduction, by Ariel Rokem and Tal Yarkoni – A review.
• When Animals Dream: The Hidden World of Animal Consciousness, by David M. Peña-Guzmán – A review.
• Free Agents: How Evolution Gave Us Free Will, by Kevin Mitchell – a review.
• “You are not expected to understand this”: How 26 lines of code changed the world, edited by Tori Bosch – a review.
• The Self-Assembling Brain, by Peter Hiesinger – a review
• Patterns, Predictions and Actions: Foundations of Machine Learning, by Hardt and Recht – a review
• The Story of Proof: Logic and the History of Mathematics, by John Stillwell – a review
• In pursuit of Zeta-3 – The World’s Most Mysterious Unsolved Math Problem, by Paul Nahin – a review
• When least is best, by Paul Nahin – a review
• A course in Complex Analysis, by Saeed Zakeri – a review
• Visual Differential Geometry and Forms – a mathematical drama in five acts, by Tristan Needham – a review
• Curves for the Mathematically Curious – an anthology of the unpredictable, historical, beautiful and romantic, by Julian Havil – a review
• Relativity, The Special and General Theory, 100th anniversary edition – by Albert Einstein
• Data Visualization, a practical introduction – by Kieran Healy, a review
• Calculus Reordered: A History of the Big Ideas, by David M.

Attendance: The mismatch between academics and students. Who is right?

R. Nazim Khan, University of Western Australia

Presentation at the 11th Southern Hemisphere Conference on the Teaching and Learning of Undergraduate Mathematics and Statistics (‘Brazil Delta 2017 for short)

Students don’t attend from the 1^st lecture – how do they know if the lecturer is good or not? Something else is afoot.

Lectures are recorded, students watch the recordings rather than attending.

Low attendance is correlated to high failure rate.

Reasons for low attendance:

• Maths is not their major
• Lecturing is not done well
• Students believe they can pass without attending
• When students have jobs and work comes up, they prioritise work over attendance
• Attendance is higher when there is assessment in class
• Research on attendance …

This study:

Does attendance affect performance? Who attends class? Attitudes on attending, staff and students?

Business statistics course, records of attendance, survey, marks, demographics, high school marks.…

A tale of two journeys

Barbara Miller-Reilly and Charles O’Brien

Presentation at the 11th Southern Hemisphere Conference on the Teaching and Learning of Undergraduate Mathematics and Statistics (‘Brazil Delta 2017 for short)

20 years ago Charles was a young business man with a fear of maths; Barbara was a teacher of mathematics-avoident adults and working on a PhD.

Recently Charles asked Barbara for help with maths again. They decided to co-author a paper on their journeys.

Barbara:

• Left teaching to look after her 3 children
• Did part-time teaching, e.g. course on Maths Anxiety, where she learnt many skills
• Started job-share university work
  • Developed maths and statistics learning
  • Researched programmes encouraging girls in STEM
  • Started PhD in early 50’s

Charles

• Lower stream in maths at aged 13
• Failed all maths tests in high school
• Left his brokering job due to fear of maths
• Wondered if he has a maths version of dyslexia
• Said maths was like skiing on blue ice with no edges, blindfolded.

Understanding of limits and differentiation as threshold concepts in a first year mathematics course

Greg Oates (Robyn Reaburn, Michael Brideson, Kumudini Dharmasada)

Presentation at the 11th Southern Hemisphere Conference on the Teaching and Learning of Undergraduate Mathematics and Statistics (‘Brazil Delta 2017 for short)

Misconception from school: a graph can never cross an asymptote (Greg had never seen such a graph before university).

Beware of demonstrations that cement misconceptions like walking halfway to the wall repeatedly, the tortoise and the hare.

Threshold concepts – once you understand it, you can’t go back. Meyer & Land, 2003.

Bachelard 1938  -topics that are epistemological obstacles, hard to get.

Are limits threshold concepts?

Students see trickery when limits are taught.

Study

• 1^st year calculus
• Pre-survey
• Interviews
• Repeat survey in 2^nd semester
• In survey, responses were true, false, never seen before, forgot
• Only 14 responses from 270 students
• 4 said you can’t cross a vertical or horizontal asymptote
• 7 said the limit of sin x / x as x tends to 0 could probably be rewritten so the denominator is not l

In interviews, the way students talk about limits, asymptotes, infinity showed that it is a threshold concept.…

Chris Rasmussen, chris.rasmussen@sdsu.edu, maa.org/cspcc

Presentation at the 11th Southern Hemisphere Conference on the Teaching and Learning of Undergraduate Mathematics and Statistics (‘Brazil Delta 2017 for short)

There are 4 regular  international conferences on undergraduate mathematics:

RUME (USA), DELTA (Southern hemisphere), one in the UK, one in Europe

How do you make sense of Ax = b where x and b are vectors? (Larson & Zandieh, 2013). There are multiple representations:

• Linear combination, vector addition
• System of equations, intersection of 3D lines
• Transformation, one vector mapped to another

Chalk Talk practices include

• Verbalising everything written on the board
• Board choreography
• Using pointing gestures to highlight key issues, and connections
• Using rhetorical questions to signal transitions, reflection or to check for understanding

Students in lecture-oriented classes has 1.5 times the chance of failing compared to inquiry-oriented classes. Inquiry-based learning is especially good for women. The continued use of traditional lecturing without some form of active learning can be seen as a way to limit the success of many students. …

The exploitation of videos in teacher training

Marcia Jussara Hepp Rehfaldt, University of Vale do Taquari, Brazil

5^th year of a research project on primary mathematics education. Using videos to teach mathematical modelling to teachers in training.

Steps for creating videos

1. Mathematical modelling practices were developed by researchers and recorded on video, e.g. how to choose a team.
2. Editing the image and created slides on an online platform
3. The narrative and final editing were carried out.

The narrative was tabulated. Each of 14 screens was described by what was said and displayed.

What was done with the video?

• Training courses with undergraduate students in teaching
• Teachers in 6 schools
• Online training courses – no professors wanted to go to the northeast state of Brazil after kidnappings

After the video, sent questionnaire to participants and analysed using Tagcrowd software to find most mentioned words (word cloud).

• Common words: mathematica, tendancias, contribuiu, video, clara, ensino, aprendizagem, alunos.