A common mistake by creationists is that evolution consists of "I need wings, I'd better grow them" or that we believe that fish just poof turned into monkeys, or that it being called a "theory" of evolution inherently discredits it (Gravity, by the way, is called the "theory of gravity").
As any 7th grader in biology class will tell you, the first life was single-celled organisms. These turned into fish, which evolved legs and became amphibians to adapt to life on land. Amphibians eventually turned to reptiles, such as dinosaurs. Birds evolved from reptiles, and mammals came on the scene at about the same time. Lagomorphs and mammals like them evolved into primates such as the ancestors to the chimpanzee, and humans evolved from there. The idea that a God gave us a "spark" is similarly false; our brains were just smart enough at the right time. A dog who found out how to open a door has not been given an intelligent spark by God; humans are the same. We were lucky, and frankly, humans aren't all that special.
Found in increasing numbers in Africa are small variations that are a lead on the path to humanity; apes skulls evolved for bigger brains, we learned to stand upright, etc. In fact, the list of homo- species alone is huge, not even counting more distant relatives such as australopithecus:
†Homo helmei discovered 1935
†Homo helmei florisbad (Florisbad Man)
†Homo njarasensis discovered 1938
†Homo habilis (Handy Man) discovered 1964
†KNM-ER 1813*
†OH 7 (Jonny's child)
†Homo rudolfensis (Rudolf Man) discovered 1986
†KNM-ER 1470
†Homo ergaster (Working Man) discovered 1975
†Homo ergaster groves
†KNM-ER 992 discovered 1992
†Homo erectus or Archanthropus (Upright Man) discovered by Dubois, 1892
†Homo erectus capensis discovered by Broom & Robinson, 1949
†Homo erectus erectus discovered by Dubois, 1892-1894
†Homo erectus javensis or Pithecanthropus erectus (Java Man) discovered by von Koenigswald, 1936
†Homo erectus hexianensis
†Homo erectus lantianensis discovered 1964
†Homo erectus leakey discovered by Heberer, 1963
†Homo erectus mauritanicus discovered by Arambourg, 1954
†Homo erectus modjokertensis discovered von Koenigswald, 1936
†Homo erectus paleojavanicus sangiranensis or Meganthropus paleojavanicus discovered by Sartono, 1976
†Homo erectus pekinensis or Sinanthropus pekinensis (Peking Man) discovered by Black & Zdansky, 1927
†Homo erectus petraloniensis 1986
†Homo erectus soloensis or Javanthropus soloensis
†Homo erectus trigliensis 1966
†Homo erectus trinilis
†OH 9 (Chellean man)
†Homo atlanthropus (Atlantos Man)
†Homo atlanthropus algericus (Algeria Atlantos Man)
†Homo atlanthropus mauritanicus (Mauritania Atlantos Man)
†Homo floresiensis (Flores Man — discovered 2003-2004. Species status remains under debate)
†LB1 (Hobbit Man)
†Homo rhodesiensis (Rhodesia Man) discovered 1921
†Homo rhodesiensis kabwe
†Homo georgicus (Georgia Man, discovered 2002-2003)
†D211
†D2280
†D2282
†D2600
†D2700
†D2735
†Homo antecessor (Predecessor Man)
†Homo antecessor castros
†Homo cepranensis (Ceprano Man) discovered 2003
†Homo cepranensis ceprano
†Homo heidelbergensis (Heidelberg Man) discovered 1908
†Homo heidelbergensis mauer
†Homo neanderthalensis (Neanderthal Man) discovered 1864
†Neanderthal (Neandertal Man)
Homo sapiens
†Homo sapiens archaic (most ancient wise man) discovered 2003
†Homo sapiens idaltu (elderly wise man — or Herto man; discovered 1997)
†Homo sapiens fossilis (fossil wise man) discovered 1869
†Homo sapiens steinheimensis discovered by Berckhemer, 1934
Homo sapiens sapiens (Wise Man) discovered 1758
†Homo sapiens sapiens palestinus or Cro-Magnon (Wise Man or Palestinian man; early humans) discovered by McCown and Keith, 1932
Quite frankly, this has convinced me more than:
"God created man (lit. adam) in his own image; in the image of God he created him; male and female he created them".
