Phonemic Awareness (letter sounds) and phonics (blending letter sounds)
sparklinginsecondgrade.com/youtube-videos-for-teaching-phonics/

www.ateachableteacher.com/online-phonemic-awareness-games/

Math App Pages
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http://primarychalkboard.blogspot.com/2015/11/must-have-fact-fluency-apps-for.html

https://www.themaven.net/kidsactivities/kidsactivities/25-best-math-apps-for-kids-of-all-ages-ImaimPkR_0yogVylLqU0dw/

https://igamemom.com/10-free-math-apps-for-elementary-school-kids/#_a5y_p=868846

http://www.fernsmithsclassroomideas.com/2015/09/fourteen-fabulously-free-math-apps-with.html