2.  To discriminate similar objects  To make careful estimations  To make precise measurements  To create models

3. Observation details may be measureable (made with measuring tools), observable (made using senses), or both.

4. In scientific investigation, data should be collected, recorded, analyzed, and reported through appropriate METRIC measurement and tools. Measurements must be ACCURATE. ALL scientific measurements are in METRIC UNITS!

5. Metric ruler Used to measure length Base unit – meter In class, mainly centimeters (cm) To write, use whole number on the left, decimal, and then count small marks.

6. 0.3 cm 1.0 cm 1.5 cm 2.7 cm 4.3 cm

7. Triple Beam Balance Used to measure mass Base unit – gram In class, mainly use gram (g) To write, read each beam in numerical order

8. 1 st, read 100’s place (ex- 100) 2 nd, read 10’s (Ex- 30) Finally, read 1’s, just like the metric ruler (Ex- 5.7) Combine to get the answer 135.7g

9. Graduated Cylinder Used to measure volume Base unit – liter In class, mainly use milliliters (ml) To read, leave on level surface and look straight at cylinder, determine the scale (what are you counting by), and read at the bottom of the meniscus.

10. 12 ml16 ml 14 ml *Be sure to find interval first!!

11. Thermometer Used to measure temperature Base unit – Celsius In class, use Celsius (C) To read, determine interval and go straight across.

12. 18 C 0 C -8 C 30 C

13. Data should be collected, recorded, analyzed, and reported. Data should be organized and communicated through appropriate graphical representation.

15. tasting smelling seeing touching hearing

16.  Qualitative- relating to or involving quality or kind  Quantitative- related to, expressible as, or involving measurement (quantity) (HAS NUMBERS)

17. QualitativeQuantitative 1.The sun is shining. 2.The grass is green. 3.The sheep are baaing and eating daisies. 1.Three sheep are in the grass. 2.One sheep is in the water! 3.Four daisies are growing in the pasture.

18. A model is a representation of an object or process that allows scientists to study something in greater detail. Models provide a way of visually representing abstract concepts. Models permit students to order events or processes.