January 30, 2019
by Jonathan Tweet
Comments Off on Clades Solo Mobile App
A fast version of Clades for iOS and Android. Updated with dinosaurs, pterosaurs, and other prehistoric animals—play more science notes about the animals pictured in the game. iTunes: https://itunes.apple.com/us/app/clades-solo/id1450055203 Google Play: https://play.google.com/store/apps/details?id=org.ideategames.CladesSolo Amazon Kindle Fire: https://www.amazon.com/gp/product/B07NJG8KSY
September 21, 2018
by Jonathan Tweet
Comments Off on Grandmother Images for Teachers
When teachers present Grandmother Fish to classrooms, it’s handy to have images of the five Grandmothers. Here are full-size images of the Grandmothers, each to be printed on a letter-size sheet of paper. Sometimes for a reading I have five … Continue reading
September 7, 2018
by Jonathan Tweet
Comments Off on Free Evolution Books for Teachers
Know any elementary school teachers in the US? How the Dormacks Evolved Longer Backs and How the Piloses Evolved Skinny Noses are two fictional books that demonstrate adaptation by natural selection. If you’re a grade school teacher in the US, … Continue reading
June 21, 2018
by Jonathan Tweet
Comments Off on Evolution Resources
This post provides online resources for fans of evolution for kids, parents, and educators. Books, Games, and Web Sites When I was working on Grandmother Fish, I naturally looked around for other evolution resources that were already available. Evolution: How … Continue reading
June 21, 2018
by Jonathan Tweet
Comments Off on Charles Darwin Dance
Here’s a dance I like to teach children when I do author readings and school visits.
May 7, 2018
by Jonathan Tweet
Comments Off on Clades & Clades Prehistoric Press Release
ATLAS GAMES RELEASES TWIN EVOLUTION CARD GAMES FOR CHILDREN, CLADES AND CLADES PREHISTORIC The creative team behind Grandmother Fish—Jonathan Tweet and Karen Lewis—also created these games and funded them on Kickstarter. SEATTLE (May 1) — Clades and Clades Prehistoric are … Continue reading
May 8, 2017
by Jonathan Tweet
Comments Off on Chiroptera: Gliding, Flying, and Echolocating
The prehistoric mammals of the air are bats, two early bats, Icaronycteris and Onychonycteris, and an even earlier protobat, which is hypothetical. Icaronycteris (“Icarus bat”) evidently hunted moths with echolocation about 50 Mya, which bats commonly do today. Onychonycteris (“clawed … Continue reading
May 3, 2017
by Jonathan Tweet
Comments Off on Speech at March for Science—Seattle
Here’s the 4-minute speech I gave at the March for Science in Seattle, Earth Day 2017, April 22. That’s Karen up on stage with me, wearing a coral reef on her head. It was an honor to speak and a … Continue reading
April 24, 2017
by Jonathan Tweet
Comments Off on Pinnipeds: From Feet to Fins
The prehistoric mammals of the water are pinnipeds (“fin foots”): the walrus-like Valenictus; the seal-like Enaliarctos; and the otter-like Puijila. Valenictus lived around 5 Mya, and it had no teeth other than its tusks. It evidently ate mollusks, like modern … Continue reading
April 17, 2017
by Jonathan Tweet
Comments Off on Xenarthrans and Afrotheres: Prehistoric Oddballs
The prehistoric mammals of the land are two xenarthrans (“strange joints”) and an afrothere (“Africa beast”). The xenarthrans are a glyptodont and a ground sloth, while the afrothere is a mammoth. Glyptodonts (“carved tooth”) were giant armadillos that arose about … Continue reading