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Casio fx-991EX Review - Math Class Calculator
Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators
Show a Trigonometry Graph transformation on your mobile device via QR codes fx-991EX Casio Classwiz - YouTube
Casio fx-991EX Review - Math Class Calculator
fx991EX Functions, Tables, Regressions and Visualization with QR Code Mini-Math Lesson) - YouTube
Casio fx-991EX Review - Math Class Calculator
Found this incredible function on my Fx991EX if you press shift and Option button on left corner it creates a QR code that can be scanned with a phone to see graphing
How to Find the Equation of a Line and the Gradient Using a CASIO FX-991EX CLASSWIZ - YouTube