Why Calculators?
During the past several years, math teachers at DeKalb High School have been integrating graphing (graphic) calculator technology into the mathematics curriculum. This change in delivery of our curriculum has created an improvement in student learning from algebra through calculus.
With graphing calculator experience, our students are more capable when working with those real-world applications and better prepared for the challenges of high school and beyond. The calculator makes multiple representations easy to show. Students are able to see expressions or formulas (algebraic representations), then immediately switch to graphs or charts (visual representations). Research shows that seeing concepts through multiple representations increases skill and understanding. Downloads of additional applications and study sets further increase the usefullness and flexibility of this powerful learning tool. Graphing calculators are allowed on standardized tests and classroom testing.
The use of graphing calculators has been shown to provide all students at various levels greater access to complex mathematical concepts.
Teachers have classroom sets of calculators to use during class, but owning a calculator extends the learning process beyond the classroom, increases independent learning time and allows time for curiosity and exploration. With calculators in class and at home, students take a more involved role in learning and develop better skills and attitudes toward math.
Why the TI-Nspire Calculator?
The recommended calculator for 9-12 students is the TI-Nspire (non-CAS) graphing calculator with TI-84 compatibility identical to the TI-84 graphing calculator used in our classes last year. The newest TI-Nspire is the "touchpad" version, although the previous "clickpad" version will also serve students well. A TI-Nspire package includes a TI-Nspire keypad and a TI-84 keypad, both calculators for little more than the price of the TI-84 alone or an MP3 player. Enhanced graphing capabilities combined with easy-to-use computer features distinguish TI-Nspire technology from traditional graphing calculators. Unique TI-Nspire features include the ability to see multiple representations of a problem, individually or all at the same time, on a single screen. "Grab-and-move" feature of graphed functions in real time allows students to observe relationships and patterns. Students can save and review work, using features similar to a computer. This calculator includes built-in interactive geometry capabilities that add to understanding in all our math classes. Students can enter and view mathematical expressions as they appear in textbooks, such as fractions, summations or integrals.
Students will be given further information in class on calculator purchases.