There are two official versions of ScratchJr available for iPads, Android Tablets, and Chromebooks that can install Android Apps. There are also unofficial versions of ScratchJr (without the kitten) available to use online and to download and install for Mac and Windows.
iPad: ScratchJr | PBS KIDS ScratchJr | How to Video
Chromebook/Android: ScratchJr | PBS KIDS ScratchJr | How to Video
Online (unofficial)
Mac/PC: ScratchJr (unofficial) | How to Video
Download & install
CSinSF K-2 Curriculum:
Coding as Another Language (CAL)
"The Coding As Another Language for ScratchJr (CAL – ScratchJr) curriculum introduces powerful ideas from computer science, in conversation with literacy in a playful, structured, and developmentally appropriate way. "
ScratchJr Curricula and Activities Guide (Tufts University & Dev Tech Research Group)
ScratchJr Connect
ScratchJr Connect is a free, curated database for sharing ScratchJr resources, lessons, and projects.
Lynn Spady on YouTube
Infusing Literacy in the K-5 Classroom with Computer Science
Twitter: Use and search with the following hashtags: #csk8 #ScratchJr
Recommended Channels/Playlists to check out on YouTube:
The Official ScratchJr Book (the perfect companion to the app - makes coding easy and fun)
The ScratchJr Coding Cards (deck of 75 activity cards covering fun and exciting projects designed to educate young children with ScratchJr)