'solve', 'factor') to describe the procedures carried out using technology. helping students to articulate how they are navigating the technology).įocus on communication of reasoning. Where did you find the solve command? (i.e.What is the syntax for solving an equation?.What technology features are going to be useful here?.Model the use of technology as students describe their approaches. Modelling the use of technology and discussion What steps did you use to solve the problem?.Teacher questions could focus on approaches to use of technology, as well as syntax. Scaffold students' use of a range of approaches by having some students explain their use of technology.
Note that some computer algebra systems use the term ‘factor’ to access the factorisation command, so students will need to be familiar with the syntax of their particular technology and be able to relate this to the mathematical language they might normally use. Note that you arrive at the familiar quadratic formula. c) The activity is presented in a Teacher Version, with all screen shots and. Using factorisation, followed by 'solve'. Novice users should complete the activity TI-Nspire CAS An Introduction before attempting this activity. Using the inbuilt 'solve' feature in one step Two alternatives are shown below, using a computer algebra system (TI-Nspire): Name: Solving Quadratic Equations by Graphing.
If you have a TI Nspire then scroll down below this.
The example below demonstrates this strategy in a Year 10 class solving quadratic equations ( VCMNA337). Here (below) is a video showing how to program the quadratic formula into a TI83 or TI84 calculator. ask students to compare and contrast their written solutions.discuss what the solution to the given problem will be when technology is used.model the use of technology as described by students.It also contains a search engine for formulas. ask students to explain their strategies for solving using technology Up to TI-Nspire Basic Files: mathlibrary.zip: 3081k: 21-05-27: Math Equations Library 4.0 (CAS) This library contains formula sheets and programs for geometry, precalculus, calculus I-III, statistics, and linear algebra.ask students to solve the same problem using technology.model a pen-and-paper solution, calling on students to contribute to the steps recorded on the board.provide students with a problem to solve using pen-and-paper.To scaffold students to develop their ability to communicate solutions when they use technology, teachers can: In this case, students must make decisions about how they will communicate their mathematical solutions when the steps they might normally record using pen-and-paper are carried out using technology (Ball & Stacey, 2003). When students are using technology for learning and doing mathematics, some procedures which might normally be performed using pen-and-paper will be performed using technology (Flynn & Asp, 2002).