jpfed [Lexaloffle Blog Feed]

Jumping pumpkins

Tue, 31 Oct 2017 10:28:20 UTC

Jumping reindeer

by jpfed

[Click to Play]

The in thing is to rail against premature Christmas preparations, but I love Christmas, so I've given Jumping Pumpkins a reskin for the holidays.

Jumping pumpkins

by jpfed

[Click to Play]

My preschooler daughter is obsessed with pumpkins; she pets them, kisses them, ascribes emotion to them, and imagines them jumping about. So this is kind of her first... game? Preschoolers have low standards, let me tell you.

Arrows to move (up to jump).

Adding small natural numbers

Sat, 16 Jul 2016 02:59:35 UTC

Adding small natural numbers 0.1.0

by jpfed

[Click to Play]

Another simple math visualization for my son.

Multiplying small natural numbers

Wed, 27 Apr 2016 02:23:00 UTC

Multiplying small natural numbers 0.1.0

by jpfed

[Click to Play]

Another educational toy cart for my son. Not terribly interesting for the grownups here, but it shows the effect of changing the operands of a multiplication operation.

Controls:

Left/Right : Choose which operand to select
Up/Down : Increase/Decrease the selected number
Z/X : Choose a different visualization of the multiplication operation

Factors

Fri, 18 Mar 2016 01:17:10 UTC

Factors 0.2.1

by jpfed

[Click to Play]

Added coloring to show correspondence between currently-selected factor and its visual representation.

Controls:

Left/Right : select a different number
Up/Down : increase/decrease selected number
Z/X : make factorization canonical (sort in ascending order, no 1s)

Factors 0.2.0

by jpfed

[Click to Play]

In the original version of this, you could only change the product (and the factors would be calculated from that). In this version, you can change the product, but you can also arrow over to the factors and change them, too, which hopefully helps the user see relationships between numbers.

Factors 0.1.0

by jpfed

[Click to Play]

Here's a little visualization of numbers in terms of their prime factors. The basic idea is stolen from some Flash thingy I saw years ago; I can't remember exactly where...

Up and Down change the number being displayed. Left and right toggle whether the recursive-subdivision process starts with small factors (default) or large factors.

I'm hoping that if someone plays with it for a while they'll understand what it's showing and why.

This is the first cart I'm posting from a set of educational carts I'm making for my preschooler son, who is starting to get interested in pico-8.