Lessons for 4.MD.A.1
Customary length unitsInches, feet, yards and miles, the length units used in the United StatesLesson
Iterating a single unitMeasuring by moving one copy of the unit along end to end and keeping countLesson
Metric length unitsMillimeters, centimeters, meters and kilometers, the length units used almost everywhere elseLesson
Metric prefixesKilo, centi, milli and the rest are names for a size, and they mean the same beside any base unitLesson
The customary systemThe inch, pound and gallon family used in the United States, grown out of old trade measuresLesson
The metric system and SI unitsOne base unit for each attribute, with every other unit ten times bigger or smallerLesson
Customary conversionsInches, feet, yards, miles; ounces, pounds; cups to gallons.Lesson
Converting metric units by powers of tenPowers of ten: shift the decimal point.Lesson
Smaller units give bigger countsThe same object measures as more small units or fewer big ones, so size and count move opposite waysLesson
Units of timeSeconds, minutes, hours, days, weeks, months and years, and how they nest inside one anotherLesson
Printable Worksheets
Customary length units worksheet (PDF)Printable worksheet with answer keyPreview
Iterating a single unit worksheet (PDF)Printable worksheet with answer keyPreview
Metric length units worksheet (PDF)Printable worksheet with answer keyPreview
Metric prefixes worksheet (PDF)Printable worksheet with answer keyPreview
The customary system worksheet (PDF)Printable worksheet with answer keyPreview
The metric system and SI units worksheet (PDF)Printable worksheet with answer keyPreview
Customary conversions worksheet (PDF)Printable worksheet with answer keyPreview
Converting metric units by powers of ten worksheet (PDF)Printable worksheet with answer keyPreview
Smaller units give bigger counts worksheet (PDF)Printable worksheet with answer keyPreview
Units of time worksheet (PDF)Printable worksheet with answer keyPreview