Writing reports and discussion

What is the primary goal of the conclusion in your science investigation report?

• a) To list the materials you used.

• b) To state your main findings and whether they supported your hypothesis. .

• c) To describe the procedure you followed.

• d) To introduce completely new scientific concepts

Why is it important to link science ideas to what you found in your investigation?

• a) It makes the report longer.

• b) It provides a scientific explanation for your results.

• c) It's only for very advanced research papers.

• d) It shows you can copy information from a book

When you evaluate your investigation, what does that involve?

• a) Checking your grammar.

• b) Sharing what others did incorrectly.

• c) Thinking about how the experiment could be improved.

• d) Creating a visual representation of your data.

What must a "justified conclusion" be based on?

• a) Your personal feelings.

• b) Data and observations from your experiment.

• c) Opinions from your friends.

• d) General knowledge.

Look at the following discussion and rate the discussion -

Our experiment aimed to see if baking powder makes cookies rise. Our results showed that the cookies with baking powder were taller than those without. So, baking powder makes cookies get bigger. This is because baking powder has chemicals that make gas, which makes the cookies puff up.

• 4A

• 5D

• 5P

• 5A

The results indicate that brown sugar cookies were chewier and spread more than white sugar cookies, which were crispier and flatter. This is evident from our observations of texture and appearance. This is because brown sugar contains molasses, which is hygroscopic and retains more moisture, leading to a softer, chewier texture. White sugar, being pure sucrose, contributes to crispness and wider spread. To improve our observations, we could have used a standardized cookie cutter size for more consistent initial cookie dough balls, reducing variation in spread and ensuring a fairer comparison.

• 4A

• 5A

• 6A

• 7A

Our investigation successfully determined that Chip B was the crispiest, exhibiting the highest average snap decibel reading and requiring the greatest snap force before breaking. This valid conclusion aligns with the factors influencing crispness, as Chip B likely had a lower moisture content and a more rigid starch structure compared to other chips, consistent with scientific understanding of chip texture. To enhance the reliability of our decibel measurements, using a soundproof environment would minimize background noise, ensuring that only the chip-snapping sound is recorded. Furthermore, our visual assessment of brittleness could be improved by using a more objective method, such as image analysis software, to quantify fracture patterns, thus providing more robust data for evaluating crispness beyond simple sound and force measurements.

• 4A

• 5A

• 6A

• 7A