What does the Sort by Size worksheet cover?
It practices classifying by magnitude — 5 questions for Kindergarten, all on Common Core K.MD.B.3: Sort things into groups and count each group. The instruction to students is “Sort each one into the right box”, and the answer key follows on the next sheet.
Which Common Core standard does Sort by Size practice?
CCSS.MATH.CONTENT.K.MD.B.3 — K.MD.B.3, under Measurement & Data for Kindergarten. The published standard reads: “Classify objects into given categories; count the numbers of objects in each category and sort the categories by count.” The worksheet assesses that standard rather than a paraphrase of it.
What age or grade is this worksheet for?
Sort by Size is written for Kindergarten, typically ages 5-6. It is one of the sheets on K.MD.B.3, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.
Does Sort by Size come with an answer key?
Yes. All 5 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.
How many different versions of Sort by Size can I print?
25 — one per student, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.
Is Sort by Size free to print and photocopy?
Yes. Sort by Size, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.
Is there a lesson plan to teach K.MD.B.3?
Yes — “Sorting into Groups and Counting” is a 30-minute Kindergarten plan for K.MD.B.3, timed section by section, with the misconceptions to expect and an exit ticket. Sort by Size is the practice that follows it.