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COVID-19 coronavirus pandemic early childhood education teacher school classroom mask PPE safety precaution health hygiene prevention spread containment mitigation outbreak lockdown social distancing quarantine isolation contact tracing testing vaccine treatment recovery resilience adaptation innovation technology remote learning online education virtual classroom distance learning e-learning blended learning hybrid learning personalized learning active learning engaged learning student-centered learning play-based learning inquiry-based learning project-based learning problem-based learning
Early childhood educator wearing a facial mask in a classroom
Size 3450 × 2598
Format jpg
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