High school Maths resources
Teacha! is growing every day and we are pleased to showcase Butterfly Classrooms. They have many resources aimed at teaching Maths in a creative way, to foster deeper understanding. The resources are mainly directed at high school teachers, specifically in the FET Phase.
Parabolas - Thinking abstractly
2 pages with memo. Your learners are familiar with the formula of a parabola y=a(x+p)^2+q. But how much do they really understand about the effect of each of these parameters on the parabola? This exercise forces them to think about it and in the process deepens their understanding of parabolas.
Around the world in 1000 dresses
This is a fun exchange rate activity that was set up especially for girls, the boys in your class might not appreciate the content so much. It was designed for a class where each learner has access to the internet, in order to look up the exchange rates, however, it can easily be adapted by providing the learners with a list of the necessary exchange rates. It is important to emphasise that the answers to the questions are not very important (you can just type it into Google and get the answer) the point of the exercise is to show your steps. This is also why I did not include a memo since the answers change from day to day. All you do to get the memo is to type the prices into Google while the learners are doing the activity. This was created for a South African class, so the South African Rand is the main currency used.
Measurement - changing dimensions
This investigation allows learners to see the effect on volume when you change one, two or all three dimensions. It was designed as a self-study activity (and can also be used as an assessment but there is no investigation in term 3/4) but I have also used it very successfully as the backbone of my lesson. Learners need to be familiar with the Volume of a prism, pyramid and cylinder.
A slightly different worksheet that you can do at the end of the chapter on Trig formulas. Not only does it require learners to know how use the formulas, they also need to understand when you would use the trig formulas. It is low-entry worksheet where each learner determine how much they will get out of the activity.
Are you tired of writing out long formulas on the board? This slideshow, consisting of 60 ready-to-use slides are the perfect solution. Working through the slideshow normally take about 10 lessons. You will find examples on: Future value annuities Present value annuities Calculating the outstanding balance on a loan Depreciation Deferred annuities
Analytical Geometry - Circles
This ready-to-use slideshow consists of worked-out examples of circles on the Cartesian Plane. This slideshow covers how to determine the equation of a circle as well as the equation of a tangent to a circle. Each example is illustrated by a diagram. 38 slides
Number of slides: 28 Grades: 8 and 9 This slideshow consist of multiple examples of linear number patterns. Starting by exploring how the pattern change using diagrams to depict the number patterns. From there we develop a method that we can use to determine the formula for any linear number patterns.
Investigation - Interior angles of a polygons
This is another investigation that was set up for learners to do completely unaided. The concept is not a new one, but here is everything they need in the same place in a well scaffolded activity. I use it as an assessment, but it can also work very well as a class activity.
Investigation - Speed, distance, time
I designed this investigation for my grade 9 learners, after our area was hit by some horrific fires. The investigation was designed in such a way that learners can work through it by themselves, with no preparation or help from the teacher. Everything they need to know is on the investigation, but I left it in Word format so that you can edit it to include locations familiar to your learners. The questions are set in such a way that learners get to use the Speed/Distance/Time formula in different ways.
Factorise the sum and difference of cubes
Number of pages: 4 (investigation) + 3 (memo) Total: 50 marks Caps required Gr 10’s to do an investigation in term 1. This investigation on factorising the sum and difference of cubes is a low entry, high exit activity. The first few questions are fairly easy, while the last few are very difficult. This ensures that all learners can do fairly well, without leaving you with inflated marks.
Tree Diagrams - Dependent and Independent Events
I love teaching probability and tree diagrams are personally my favourite way of solving probability problems, but 2 things always spoil it for me. The time it takes to make draw tree diagrams and animate them on PowerPoint The boring context of most probability questions. It’s no wonder that learners ask us why they need to do this, if all the examples consist of spinners and dice. After all how often have you sat down to pick coloured counters from a bag. If you feel the same about probability, the following slides will make a huge difference. I always teach dependent events first, but you can mix and match them as you like.