duolingo | languages | language

kindle | amazon | bookmark

ewa | audiobooks | learners

astronomy | constellation | stargazing

seek | app | wildlife

piano | beginners | apps

classroom | teaching | assignments

dogo | pup | trainer

inaturalist | app | species

falou | learners | languages

neuronation | training | brain

plantapp | app | flora

blossom | blossomplant | flowers

wikimedia | encyclopedia | wikipedia

stellarium | astronomy | telescope

sky | constellations | gps

skyview | sky | telescopes

natureid | plants | plantum

mushrooms | mushroom | fungi

korean | app | learning