If you look back, you slow down and they catch up.

If you look down, you'll trip over a lot of trash thrown your way.

But if you look up, you will always see the endless sky. That tight feeling you get when you start something new. The burning muscles during training, the lump in your stomach during an im-portant meeting, the feeling of hunger during a diet: these may seem like sig-nals to stop.

The majority - with almost negligible exceptions - save themselves from life. They tiptoe through...

In the Netherlands and Flanders, a growing number of primary schools are now providing gifted education. Teachers have expressed their need for practical suggestions that will help them to offer high-quality education to gifted learners. To achieve high quality in gifted education, high quality in teacher education on this subject is required. To meet their professional needs, an increasing number of Dutch and Flemish teachers are investing in continuous professional development on the subjec...

With three of the pentomino letters you can make FUN. With all twelve pentominoes you can make a lot more fun. This exceptional book abounds with fanciful congruences, enclosures, tilings and a host of combinatorial squares: ConMagic, EyeMagic, GeoMagic and SymMagic. Many of the results are far from trivial, obtained by extensive research and programming. Their complete uselessness and beauty compete fiercely with each other. Almost every page bears witness to that by colourful figures. You a...

The composition of our brain of a human part of consciousness and analytical thinking, and a primal brain where the primary life functions are regulated, is the cause of many misunderstandings in our thinking and opinions over all kinds of things.

For example, we consider cultural matters like painting and music to be high-quality activities, whereas they are based only on physical-chemical processes that are not properly understood by the human part of our brain and therefore highly assesse...