Let me recommend, however, that you skip exercises that involve draw.ss. If you can, make up alternatives using image.ss or universe.ss (see teachpack docs).

— Matthias

(via PLT)

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# Tag: HTDP

## image.ss and universe.ss in HtDP

## HtDP Makes SICP Easier

## HtDP Teaches More Than Programming

## A peasant revolt against DrScheme!

## HtDP Languages and Math

## The First Year

Let me recommend, however, that you skip exercises that involve draw.ss. If you can, make up alternatives using image.ss or universe.ss (see teachpack docs).

— Matthias

(via PLT)

Recommendation: do the math-y sections in HTDP. This will give you a flavor of the kind of mathematics you get in SICP, even though there are non-overlapping examples in each. I would especially focus on the examples from calculus (numeric differentiation, integration, taylor series etc) but the graph traversal (network flow) things are good for you too. Once you are at east with those, you can tackle SICP and get through fast

–Matthias

(via PLT)

…you won’t believe it but by reaching part VI, you have mastered a significant chunk of mathematics that you would have never considered within reach had I told you at the outset of your studies that you’d understand rudimentary concepts from “higher” algebra (advanced college material).

— Matthias Felleisen

(via PLT)

Here is an interesting thread in the PLT discussion archive discussing the want of beginning programmers only to learn things that are clearly useful!

(surely via the PLT Discussion list, but I can’t recall or find it…)

A comment by Matthais on the nature of the first three HtDP languages:

HtDP’s first three teaching languages are basically mathematics, ignoring the parentheses. We use

— arithmetic, for many different forms of data

— algebra, for (potentially conditional) function definitions

— pre-calculus, for induction and recursion (these things converge, like series)