The first tooth often breaks through at 6 months. However, some babies are early and get their first tooth as early as 4 months. Other babies are almost a year old before they teethe. If your baby hasn't had any teeth by their 1st birthday, you might want to ask your doctor or health visitor for advice.

When baby can get from lying on his tummy, and up and sit upright without support, he or she can sit independently. For most children, this happens at 7-8 months of age.

Babies often start crawling when they are between 8 - 12 months old. Some a little earlier, others later. Babies learn to crawl by lying on their tummies and crawling forward. Then he or she starts to pull their legs up underneath them, and from there get up on all fours.

When baby is about 1 month old, he or she can usually hold his or her head for a few minutes. The more babies lie on their tummies, the more they exercise their neck muscles and become more adept at holding their head by themselves.

Lay baby on his tummy on a surface that is not too soft. A foam floor, or a play mat on the floor is ideal. Entertain baby with toys, or sing a song to keep his or her head up to watch. Read your baby and see when he's getting tired and needs a break. At first, a few minutes is enough, but it quickly turns into more.

Baby may sit in a high chair when he or she can sit stably on his or her own. It is not recommended to stack baby with cushions and so on until baby can sit unaided. Until then, baby should preferably lie on his or her stomach or sit on your lap.

If the child has a tinted eye colour, the final eye colour will often not be visible until the child is about 1 year old. In other children, it may take longer. It is also possible that there may be shade changes in the child's eye colour during the growing up period. This is not something that can be seen from an early age, but it is a shade change that is just part of the child's development and genetics.

A baby can see as soon as he or she is born. In the first few weeks, however, the baby's vision only extends about 20 cm. That's about the distance between the breast and the mother's face. So if you're going to talk to your baby, it's a good idea to get their face really close so they can see mum or dad.

It can be hard to tell when a baby's smile is deliberate and when it's more like a twitch or grimace. Typically, baby melts your heart with his or her first conscious smile when he or she is 3 - 6 weeks old.

Newborns are not yet strong in the back or neck, so sitting upright in the car seat is hard on their bodies. The time spent in the car seat should be limited as far as possible to around 20 minutes a day. If you have more than 20 minutes home from the hospital, you will of course have to make this trip. Baby's safety will always come first. But if you want to go on a road trip to Italy or visit family in Jutland, you should consider whether it can be postponed until baby is a bit older.

The inclined chair can be used immediately. The important thing is that the child does not sit there for too long at a time. It puts a strain on the baby's back to sit upright before he or she can sit unsupported. The child remains passive in the bouncer and cannot move around, thus not developing his or her body and motor skills. Therefore, the time spent in a bouncer should be kept to around 20 minutes a day.