The library
Every age, week by week and month by month
38 original entries from birth to 24 months: what's developing, what to try together, and what a lot of parents notice, all in a celebration frame, never a checklist. Prefer a personalized page? Try the weekly timeline tool.
Weeks 0 to 12: the newborn stretch
This week, your baby is learning your voice was worth the wait.
Week 1This week, your baby's nose already knows you.
Week 2This week, watching is the whole job, and your baby is good at it.
Week 3This week, a real gaze is starting to hold a beat longer.
Week 4This week, tracking your face across the room is new work, and baby is on it.
Week 5This week, evenings might get loud, and that's a phase, not a verdict on your parenting.
Week 6This week is when a lot of parents get their first real, unmistakable smile.
Week 7This week, longer alert stretches mean more time to actually play.
Week 8This week, many babies are lifting their head to 45 degrees and holding a smile like they mean it.
Week 9This week, another growth spurt may shake up the routine you just found.
Week 10This week, hands are becoming interesting toys in their own right.
Week 11This week, the vocal range is expanding, gurgles and all.
Week 12This week, hands are opening up and pushing up is starting to look like real strength.
Weeks 14 to 24: rolling into sitting
This week, reaching for a toy is starting to look like it's on purpose.
Week 16This week, full-on laughs and squeals are common, and they're contagious.
Week 18This week, everything within reach is getting the mouth test.
Week 20This week, sitting with a little help is starting to feel steady.
Week 22This week, passing a toy from hand to hand is a small feat of coordination.
Week 24This week, a rolling baby can suddenly be in a very different spot than you left them.
6 to 12 months: sitting, crawling, first steps
This month, sitting with a little help and a whole lot of babbling take center stage.
Month 7This month, sitting solo is often within reach, and stranger radar may be switching on.
Month 8This month, the first commando-crawl attempts might launch a whole new chase.
Month 9This month, a wave bye-bye might be the cutest new party trick yet.
Month 10This month, cruising along the couch is basically toddler training wheels.
Month 11This month, a few wobbly seconds of standing alone can feel like a huge deal, because it is.
Month 12This month is the first birthday, and every wobble on the way to walking is worth celebrating.
13 to 24 months: walking, talking, pretend play
This month, stacking two blocks might be the new favorite trick.
Month 14This month, scribbling with a crayon counts as fine art around here.
Month 15This month, following a simple instruction on the first try is a genuine milestone.
Month 16This month, feeding a stuffed animal a pretend snack might be the day's main event.
Month 17This month, a first attempt at running might look more like a fast, happy stumble, and that's exactly right.
Month 18This month, a lot of toddlers hit a vocabulary growth spurt that can feel like a switch flipped.
Month 19This month, a pretend phone call might be the most serious conversation of the day.
Month 20This month, "more milk" might be the first real two-word combo, and it's a big deal.
Month 21This month, "helping" with chores (even if it slows everything down) is a real developmental win.
Month 22This month, sorting toys by color might turn into a surprisingly focused little project.
Month 23This month, "what's that?" might become the most-asked question in the house.
Month 24This month is the second birthday, and short phrases and real conversations are starting to click.