1. introduction to touchdevelop math basic arithmetic operations Disclaimer: This document is provided “as-is”. Information and views expressed in this document, including URL and other Internet Web site references, may change without notice. You bear the risk of using it. This document does not provide you with any legal rights to any intellectual property in any Microsoft product. You may copy and use this document for your internal, reference purposes. © 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, and Windows Live are trademarks of the Microsoft group of companies. All other trademarks are property of their respective owners.

2. introduction to touchdevelop numbers,+,*, … o use the arithmetic pad to enter +, -, /, * o use the number pad to enter numbers o more in math. o floating point numbers like your calculator ✿ double precision

3. introduction to touchdevelop math o scientific calculator services trigonometry: sin, cos, acos, … calculus: pow, √, log e, log 10,… constants: π(pi), g(ravity),… numerics: floor, ceil, round,… useful: random,… ✿ https://www.touchdevelop.com/help/api/200060/mathhttps://www.touchdevelop.com/help/api/200060/math

4. introduction to touchdevelop user input o use wall→ask number to get a number from the user var x := wall→ask number(“enter x”) x →post to wall ☀ you can also add arguments to the action

5. introduction to touchdevelop exercises o use a different action for each exercise ► “compute the square root, i.e. √(x), of x given by the user” ► “compute the surface of a rectangle with its width and height from the user” ► “compute the root of ax + b, given a and b from the user” ► “compute the surface of a circle given the radius from the user”

6. introduction to touchdevelop title o item 1 o item 2 song→post to wall ☀ anecdote ☁ http://touchdevelop.com/velk (link to sample)http://touchdevelop.com/velk ► an exercise ✿ a reference