The world of events

Leap 4

From week 14, leap 4 starts! The first signals of leap 4 will appear between weeks 14 to 20 after the due date. During leap 3, your baby learned to see several smooth transitions, patterns, or sensations without seeing any connection. But after taking leap 4, your baby will start to understand that together, these form one big event. Learn everything about leap 4 in our Wonder Weeks app.

The fussy phase of leap 4

The fussy phase of leap 4

When leap 4 starts, you will notice that your baby cries more, is clingier and crankier than before. This is the fussy phase of the leap. The fussy phase of leap 4 usually lasts five weeks but could also last anywhere between one to six weeks. Did you know that all you have to do is fill in the due date in our app and you will automatically get a notification when the fussy phase of the leaps begin?

Because this fussy phase lasts longer than the previous ones, you may be concerned about your baby’s progress which seems slower. But don’t worry. From this age on, the new skills are much more complicated to learn. Your baby simply needs more time.

The skills phase of leap 4

The skills phase of leap 4

The fussy phase of leap 4 will be over by about week 20. Then it is time for the nicest part of the leap: the skills phase. Your baby has gotten used to the new world and will start to explore the new skills that go with it. After leap 4 you could see, for example, that your baby is suddenly able to grab an object or to babble, such as saying “Mommom”, “baba”, “tata”. They will enjoy playing the flying game or prefer children’s songs. Your baby could show you many new skills in this leap.

Discover the skills of leap 4

Babies choose their own skills

The new world your baby is experiencing offers a huge repertoire of new skills. Your baby will choose the skills best suited to them – the ones they want to explore. The fun thing about this is that it says something about your baby’s future personality. You can help them with what they are actually ready to do. Did you know that in our app you can find more than 77 games to stimulate your baby’s skills?

Keep track of leap 4 in our app

Did you know that not only you can tick off the skills leap 4 in our app, but you can also keep track of them in you personal diary? Some babies will mainly show their motor skills during the leap and others the speck and language skills. Every baby develops in their own way and decides for themselves what he or she wants to develop. And the best bit is that this says something about your baby’s (future) personality!

Baby leap chart

During our research into mental leaps, we discovered that this phase in which your baby cries more frequently and shows a different behavior than normally, can actually be predicted quite accurately almost up to the very week based on the due date. Discover the leaps of your baby on our website, using our baby leap chart.

More about leaps
Leap 1
WEEK 4 - SENSATIONS
From week 4, your baby enters leap 1, the world of sensations. The first signals of your baby’s first leap will appear between weeks 4 to 6 after the due date.
More about leap 1
Leap 2
WEEK 7 - PATTERNS
From week 7, your baby enters leap 2: the world of patterns. Your baby could show the first signals of leap 2 between week 7 to week 10 after the due date.
More about leap 2
Leap 3
WEEK 11 - SMOOTH TRANSITIONS
Around 11 weeks, you may see signs of the next leap approaching: leap 3, the world of smooth transitions. Your baby is acquiring yet another new skill!
More about leap 3
Leap 4
WEEK 14 - EVENTS
From week 14, leap 4 starts! The first signals of leap 4 will appear between weeks 14 to 20 after the due date. During leap 3, your baby learned to see several smooth transitions, patterns, or sensations without seeing any connection.
More about leap 4
Leap 5
WEEK 22 - RELATIONSHIPS
From 22 weeks, your baby enters the world of relationships. Welcome to leap 5! Leap 5 is no small leap. This is a giant leap! Why? This leap enables your baby to perceive the relationships between all the earlier leaps.
More about leap 5
Leap 6
WEEK 33 - CATEGORIES
From week 33, the world of categories will be knocking at your door, leap 6. The first signals of leap 6 will appear during weeks 33 to 38. Once your baby can perceive “categories”, they will realize that they can divide the world into groups.
More about leap 6
Leap 7
WEEK 41 - SEQUENCES
Around 41 weeks, the world of sequences is just around the corner. Welcome to leap 7! Between 41 and 47 leap 7 will start. While your baby mainly studied things by taking or tearing them apart during the previous leap, they will now be rather “constructive” after this leap.
More about leap 7
Leap 8
WEEK 51 - PROGRAMS
Hip, hip, hooray! During this leap, your baby will celebrate its first birthday. Your baby will not only make a leap in their mental development but will also turn form a baby into a toddler!
More about leap 8
Leap 9
WEEK 59 - PRINCIPLES
Around 59 weeks, you may see signs of the next leap: leap 9. Welcome to the world of principles. If your toddler has taken the leap, you will notice that they are running all kinds of “programs” more smoothly, more naturally and more clearly.
More about leap 9
Leap 10
WEEK 70 - SYSTEMS
Around 70 weeks, your toddler is ready for a new leap into the world of systems: leap 10. The last leap, at least the last one we have recorded. In leap 10, you can now observe your toddler becoming aware of systems after making this leap!
More about leap 10