advanced literacies coding comprehension instruction disjunctures essential digital literacies habits of mind interactivity massively multiplying crossroads metacognitive demands paradigm shift reading-writing connections reading as weaving situated/embodied learning standards of coherence teleological divide uni-tasking wreadactor Alvermann Bauerlein Bogdanich Coiro Collins Colwell Duke Filkins Gee Goldman Halverson Harrison Hartman Hawisher Johnson Kamil Kendeou Klautke Morsink Olson Reinking Spiro van den Broek Warschauer Zhang