Free object lessons
Kids can explore real objects with pictures, English words, pronunciation, size, and simple explanations.
Visual English + Size Science
Turn real objects into printable visual English lessons.
SizeRef starts with real-world size comparison, then turns familiar objects into picture vocabulary, pronunciation, simple science, quizzes, and Pro worksheet packs for families, tutors, and classrooms.
Size science foundation
Our dimension data makes lessons more concrete: big, small, tall, long, heavy, and real-world scale.
Paid printable delivery
Pro turns strong object pages into 7-page worksheet packs with activities, answer notes, and teaching flow.
Learning Studio
From one object to a full kid-friendly lesson
Search an object, then move through vocabulary, pronunciation, scale awareness, science questions, and a quick quiz from the same visual lesson.
Pro delivery
When an object is missing, Pro keeps the request focused.
Use existing object lessons instantly. For missing objects, Pro custom credits can turn a request into a private lesson pack first, then reviewed requests can become public lessons later.
1
Use existing objects
Open indexed lessons instantly and reuse them without AI cost.
2
Print Pro packs
Unlock structured worksheet packs, answer keys, and classroom-ready notes.
3
Request missing objects
Use monthly custom credits for private packs that can become reviewed public lessons.
Popular object starters
Objects people use to start visual lessons and size comparisons