I learned in school the Germans planned to conquer The Netherlands within 24 hrs. They were unpleasantly surprised it took them 5 days to do it.
The initial plan was to drop para's on key points, such as the Meuse bridges in Rotterdam and around The Hague. There they were to capture the government and the royal family, and force a surrender. The main assaults were with infantry in the north, through Groningen and Frisia (Friesland) to capture the strategic Afsluitdijk (Enclosure Dike), and in the center towards the Grebbeline.
The bridges in Rotterdam were captured, but the assault on The Hague failed. Most Fallschirmjaegers there were captured. The German assault in the north was stopped near Kornwerderzand. The fortress guarded the Afsluitdijk.
The Dutch army's main line of resistance was the Grebbelinie. This line wasn't ready (what was ready in the Dutch army?) and taken after heavy resistance. The Dutch army tried to retreat, but this retreat turned into a rout.
For this reason general Reijnders resigned his command before the war in 1939. He never thought the Grebbeline could be held. He was replaced with general Winkelman who was more compliant with the government's wishes to defend an indefensible position.
With the Dutch army in retreat, the German gave an ultimatum: surrender now, or we bomb Rotterdam to smithereens. The Dutch government accepted to surrender, but the Germans still bombed Rotterdam.
The surrender did not include the province of Zeeland, which surrendered independently on 18 May 1940. (For those of you who wonder why New Zealand is named New Zealand, this is the Zeeland it is named after.)
I'd like to add that had the parachute assault succeeded it's almost certain the
Dutch government would have surrendered, within the assigned 24 hrs.
Now we look at the raid on Eben-Emael as the most daring raid in the beginning of WW2. Had the attack on The Hague succeeded, the Eben-Emael raid would be small side note in history.