linkstream2 microblog

https://class42.com/robotrattle.html

from 610 portal

Greg Tang Math http://gregtangmath.com – Kakooma is a particularly fun and fast-paced game on this site

NCTM Illuminations http://illuminations.nctm.org/ActivitySearch.aspx

Bedtime Math http://bedtimemath.org – there is also a Bedtime Math book available!

Thinking Blocks (mathplayground.com)

https://www.kodable.com/

http://lightbot.com

Swift Playgrounds (https://itunes.apple.com/us/app/swift-playgrounds/id908519492?mt=8)

• Drag simple blocks of code
• Very gentle introduction to coding
• Begin with controlling a video game character
• iPad only

Scratch Jr (https://itunes.apple.com/us/app/scratchjr/id895485086?mt=8)

• Drag icons that represent code blocks
• Tablet only (iPad & Android)

Blockly (https://blockly-games.appspot.com/)

• Similar to Swift Playgrounds in its introduction
• Begin with controlling a video game character
• Gentle introduction to coding
• Exposure to basic programming syntax
• Runs in browser
• Tablet version in beta

Scratch (https://scratch.mit.edu/)

• More complex desktop version
• Exposure to basic programming syntax
• Also runs in browser

Hopscotch (https://itunes.apple.com/us/app/hopscotch-learn-to-code-creatively-and-make-games/id617098629?mt=8)

• Nice video tutorials
• Considers a broader range of applications than the other ones
• Slightly less gentle introduction to coding
• Tablet only (iPad & Android)

R Datacamp (https://www.datacamp.com/courses/free-introduction-to-r)

• Browser-based introduction to R
• Video tutorials
• Guided interactive coding exercises
• Full programming syntax

http://physics.stackexchange.com/questions/19552/would-a-light-or-a-heavy-ball-roll-fastest-down-a-slope

QT:{{”

both balls should have same acceleration (and therefore same velocity and displacement).
…

However, if there’s air drag, their acceleration depends on the radius and the mass of the ball, so not enough information is given for this case. If the balls are of the same material (same density ρρ), the larger one comes down faster than the smaller one.
“}}

A gradient of childhood #selfcontrol predicts health, wealth & public safety http://www.PNAS.org/content/108/7/2693.full From following 1K kids from 0 to 32 yrs