Birth to Age 5: Ohio Department of Education
Developmental Milestones: CDC
Tips for Each Milestone: CDC
https://www.cdc.gov/act-early/resources/index.html
https://www.cdc.gov/wic-guide/media/pdfs/FULL-LIST-CDC_LTSAE-Checklists2021_Eng_FNL2_508.pdf
https://www.cdc.gov/act-early/media/pdfs/2025/05/Milestone-Moments-Booklet21_Eng_Sng_FNL-508-1.pdf
https://www.cdc.gov/act-early/milestones-in-action/index.html
https://www.cdc.gov/act-early/families/index.html