Fifteen Hundred Students A Year Prabhakar Ragde (University of - - PowerPoint PPT Presentation

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Fifteen Hundred Students A Year Prabhakar Ragde (University of - - PowerPoint PPT Presentation

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Fifteen Hundred Students A Year Prabhakar Ragde (University of Waterloo) University of Waterloo Faculty of Mathematics 1500 students a year Racket How? Lessons? What next? Some history... CS 2 CS 1 elem data programming

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Fifteen Hundred Students A Year

Prabhakar Ragde (University of Waterloo)

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University

  • f Waterloo
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Faculty of Mathematics

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1500 students a year

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Racket

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How? Lessons? What next?

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Some history...

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CS 1 programming CS 2 elem data structures, algorithms

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1988: Pascal

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1998: Java

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CS 1 programming CS 2 elem data structures, algorithms

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CS 1 programming CS 2 elem data structures, algorithms CS 1 programming at half-speed

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2004: PLT Scheme

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functional programming imperative programming

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2008: no Java

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PLT Scheme (regular) Scheme/C PLT Scheme (simpler) Scheme/ Python

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Benefits

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Benefit: simple syntax

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Benefit: simple semantics

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Benefit: language levels

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Benefit: early CS content

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Benefit: proper design process

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Problems

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Problem: counter- revolution

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Problem: indifference of curriculum

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Problem: brittle 2nd course

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functional programming imperative programming

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The future

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#lang racket/bsl

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(require 2htdp/image)

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(provide my-function)

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HtDP/2e

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Advanced stream

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Racket (advanced) C (advanced)

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data Nat = Z | S Nat plus x Z = x plus x (S y) = S (plus x y)

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recursion induction invariants

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O, Ω, Θ

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scope

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binary, 2’s comp Braun, AA trees CPS

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Racket (advanced) C (advanced)

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Scribble

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#lang scribble/base @(require "slide-utilities.rkt" (for-label racket)) @title[#:style @slide-title-style] {Fifteen Hundred Students A Year} @author{Prabhakar Ragde (University of Waterloo)} @white-on-black @frame{ @image["US-map.pdf" #:scale 0.6] }

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Rendering math

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#lang scribble/base @(require "math-utilities.rkt") @setup-math @title{Math 135 Assignment 1} @author{Prabhakar Ragde} @section{First Test} This @emph{should} be a formula: @math-in{x^2 + y^2}. @section{Second Test} This is a @bold{displayed} equation. @math-disp{x=\sum_{i=0}^n y^i}

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#lang racket/base (require scribble/html-properties scribble/base scribble/core) (provide setup-math math-in math-disp) (define mathjax-source "http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-HTML") (define setup-math (paragraph (style #f (list (alt-tag "script") (attributes ‘((type . "text/javascript") (src . ,mathjax-source ))))) ’())) (define (mymath start end . strs) (make-element (make-style "relax" ’(exact-chars)) ‘(,start ,@strs ,end))) (define (math-in . strs) (apply mymath "\\(" "\\)" strs)) (define (math-disp . strs) (apply mymath "\\[" "\\]" strs))

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Conclusion

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Opportunities

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Customization

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Flexibility