| A | B |
|---|
| airplane | a flying craft |
| tally chart | a picture showing a mark or score |
| pictograph | a picture of an idea |
| most | many |
| least | smallest in size or value |
| equal | the same as |
| more than | greater number |
| less than | fewer |
| greatest | largest |
| gravity | a force pulling something towards the center of the earth |
| hypothesis | a guess of what you think to be true |
| experiment | an act to discover or test |
| adventurer | one who takes daring chances |
| pioneer | one of the first to do something |
| pilot | one who flies an airplane |
