What is the formula for calculating distance? What is the grade at which students in Vietnam will learn the formula for calculating distance?
What is the formula for calculating distance IN vIETNAM?
The formula for calculating distance is:
S = v × t
*Where:
S: Distance traveled (usually measured in meters, kilometers)
v: Speed (usually measured in meters/second, kilometers/hour)
t: Travel time (usually measured in seconds, hours)
*Example:
A car travels at a speed of 50 km/h for 2 hours. The distance the car travels is: S = v × t = 50 km/h × 2 h = 100 km
From the above formula, we can derive formulas to calculate speed and time:
To calculate speed: v = S / t
To calculate time: t = S / v
Example 1: Motorcycle on a highway
Problem: A motorcycle travels on a highway at a speed of 80 km/h for 3 hours. Calculate the distance traveled by the motorcycle.
Solution:
Using the formula: S = v × t
Substitute numbers: S = 80 km/h × 3 h = 240 km
Result: The motorcycle travels a distance of 240 km.
Example 2: Pedestrian
Problem: A person walks at a speed of 5 km/h for 30 minutes. Calculate the distance traveled by the person.
Solution:
Convert 30 minutes to 0.5 hours (since speed is measured in hours)
Using the formula: S = v × t
Substitute numbers: S = 5 km/h × 0.5 h = 2.5 km
Result: The person travels a distance of 2.5 km.
Example 3: Calculating travel time
Problem: A train runs at a speed of 60 km/h. How much time is needed to cover the distance of 180 km?
Solution:
Using the formula: t = S / v
Substitute numbers: t = 180 km / 60 km/h = 3 hours
Result: The train needs 3 hours to cover the distance of 180 km.
Example 4: Calculating speed
Problem: A bicycle travels a distance of 15 km in 1.5 hours. Calculate the speed of the bicycle.
Solution:
Using the formula: v = S / t
Substitute numbers: v = 15 km / 1.5 h = 10 km/h
Result: The speed of the bicycle is 10 km/h.
*Note: Information is for reference only./.
What is the formula for calculating distance? What is the grade at which students in Vietnam will learn the formula for calculating distance? (Image from the Internet)
What is the grade at which students in Vietnam will learn the formula for calculating distance?
Under Section 5 of the General education program in Natural Sciences attached to Circular 32/2018/TT-BGDDT on outcomes required for the 7th-grade Natural Science subject as follows:
- Movement speed
- Measuring speed
- Distance-time graph
- Explain the physical meaning of speed, determine speed from the distance traveled over a given period, speed = distance traveled/time to travel that distance.
- List some commonly used speed measurement units.
- Briefly describe how to measure speed using a stopwatch and electronic gate in school practice equipment; "speed gun" device for checking the speed of vehicles.
- Draw a distance-time graph for straight motion.
- From a given distance-time graph, find the distance traveled (or speed or time of the object's motion).
- Use images (or electronic learning materials) to discuss and state the impact of speed on traffic safety.
Thus, according to the above regulations, the formula for calculating distance is taught in the 7th-grade Natural Science curriculum.
What are the 3 competencies developed when studying the 7th-grade Natural Science curriculum in Vietnam?
Section 4 of the General education program in Natural Sciences attached to Circular 32/2018/TT-BGDDT also clearly states the specific manifestations of the natural science competencies in general and specifically for grade 7 as presented in the table below:
| Component Competency | Manifestation |
| Natural Science Cognition | Present and explain core knowledge about structural components, diversity, system characteristics, laws of motion, interaction, and transformation of the natural world. Specific manifestations: - Recognize and name natural objects, phenomena, concepts, laws, and processes. - Present objects, phenomena; the roles of objects, phenomena, and natural processes using various forms of expression such as spoken language, writing, formulas, diagrams, charts, etc. - Compare, classify, and select natural objects, phenomena, processes based on different criteria. - Analyze the characteristics of a natural object, phenomenon, process according to a specific logic. - Find keywords, use scientific terminology, connect information logically, create outlines when reading and presenting scientific texts. - Explain the relationships between objects and phenomena (cause-effect, structure-function, etc.). - Identify and correct errors; offer critiques related to the discussion topic. |
| Scientific Inquiry | Perform basic skills to explore and explain natural phenomena and life events. Demonstrate practical issues with scientific evidence. Specific manifestations: - Propose questions, ask questions on the problem + Identify and pose questions related to the problem. + Analyze context to propose problems by connecting existing knowledge and experience and use personal language to express the proposed problem. - Make forecasts and construct hypotheses + Analyze the problem to make a forecast. + Develop and articulate hypotheses to be explored. - Plan implementation + Construct a logical framework for exploration content. + Choose appropriate methods (observation, experimentation, investigation, interview, literature review, etc.). + Develop a plan to conduct the exploration. - Execute the plan + Collect and store data from the overview, experimentation, investigation results. + Evaluate results based on the analysis and processing of data using simple statistical parameters. + Compare results with the hypothesis, explain, draw conclusions, and adjust if necessary. - Write, present reports, and discuss + Use language, drawings, diagrams, charts to express the exploration process and results. + Write a report after the exploration process. + Collaborate with partners positively, respect views and assessments given by others to engage positively and justify, argue, defend exploration results persuasively. - Make decisions and propose opinions + Make decisions and propose solutions to the issues explored. |
| Apply the Knowledge and Skills Acquired | Apply knowledge and skills in natural sciences to explain common phenomena in nature and daily life; address environmental protection and sustainable development issues; respond appropriately and solve simple problems related to oneself, family, community. Specific manifestations: - Identify and explain practical issues based on natural science knowledge. - Based on understanding and investigative evidence, propose solutions and implement some solutions for natural protection; adapt to climate change; demonstrate appropriate behaviors and attitudes for sustainable development. |
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