“…The result was 53 articles remaining, and out of these, 28 articles were chosen focusing on theoretical variation and diverse natural science content. The fields which were included were: children's perceptions of the Water cycle and Cloud formation [27,28], Evaporation [29], Light [10], Heat [30], Shadow [31], Lunar phases [32], Thermometer [33], Contraction and expansion (iron heated ball) [34], Combustion (candle) [35], Friction [13,36], Animal taxonomy/animal-environment specificity/adaptation [11,37,38], Aliveness [39], Fungi [40], Germs [41], Environmental biology [42], Gardening and early math [43], Understanding of food [44], Conceptions of Water, Molecules, and Chemistry [45], Molecules and atoms [46], Rocks [47], Water Physics [48], Sound in space [49] and Density [23]. The first article included was published in 1985, with an increasing number of published works after 2010 (See Figure 3).…”