How do you separate iron filings toothpicks sand sugar chalk powder small pebbles

Following strategy can be used to separate the mixture containing  sand, pebbles, iron fillings , sugar , tooth picks and chalk powder. 

Step 1: HAND PICKING: Herein, the  pebbles and tooth picks can be separated by hand-picking method.
Step 2: MAGNETIC SEPARATION: Herein, iron fillings are separated, as they are attracted towards magnet.
Step 3: Dissolution and Filtration: Water is added to sand, sugar and chalk powder. Sugar will dissolved, but sand and chalk and sand are insoluble in water. 
Step 4: Sedimentation and Decantentation: Sand will settle down in water, hence, can be removed via sedimentation and decantentation. 
Step 5: Filtration: Chalk powder is insoluble in water, hence it can be removed by filtration method.  
Step 6: Crystallization:  Sugar can be separated from solution by crystallization.

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water

As cooking food that has to go in the oven