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ROCK FALL
PLAY
Click / tap on each falling rock. Answer the question in the box as quickly as you can.
There are only 4 questions in this game so it is quite short... if you can get those rocks!

Your final score is based on number of questions answered right / wrong, and the time taken.
...

Game: ROCK FALL

Aim: Smash all the falling rocks

Method:
Click / tap on each falling rock. Answer the question in the box as quickly as you can.
There are only 4 questions in this game so it is quite short... if you can get those rocks!

Your final score is based on number of questions answered right / wrong, and the time taken.

Grouped frequency tables
      
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ROCK FALL game to practice
'Grouped frequency tables' for 7th grade

Grouped frequency tables

Data in frequency tables can be discrete or continuous. Discrete data consists of single values, often whole numbers, and is how most data is initially gathered. If there are many data points to process, it becomes useful to group that data into a set of classes of continuous data. Continuous data can be represented in a "Grouped frequency table". Each class covers the data points within a certain range, and the classes together cover the entire range of all the data points. In grouped frequency tables, it is important that the classes cover the entire range of the given data while not overlapping.

The benefit of grouped frequency tables becomes clear when there are so many raw data points that discrete values would become difficult to process. A limitation of continuous data is that individual data points are lost so that exact calculations of the mode, median or range of the original discrete data points becomes impossible.

In this topic you are asked to compare each grouped frequency table to the raw data that it should represent. Many of the tables have deliberate mistakes that you must identify. You can do so by counting up the data points for each class and comparing them to the given frequencies.

In the first question, the raw discrete data points are:

10, 8, 25, 18, 15, 22, 5 ,9

The grouped frequency table splits the data into classes: 1-10, 11-20, 21-30.

The frequency for the 1-10 class is given as 4. We can look through the data points and confirm that there are indeed 4 values within this range: 10, 8, 5 and 9. So that frequency is correct. Checking the 2 other classes shows us that the table does indeed accurately represent the data, so the answer in this case is "yes, the table does match the data".

With our Rock fall math game you will be practicing the topic "Grouped frequency tables" from 7th grade / Statistics / Continuous data / Continuous data. The math in this game consists of 16 questions that ask you to in each instance decide whether the grouped frequency table matches the raw data.

Click / tap on rocks and answer math questions to win the game

Large thumbnail for math game Rock fall

ROCK FALL is based on the road traffic warning sign for falling rocks - a sign that seems a bit less useful than somebody getting up there on that cliff and actually doing something about it... Anyway, the rocks are falling and it is your job to stop them hitting the road below, or at least stopping them hitting the road below too many times and breaking it. Smash the rocks by clicking or tapping on them (not so easy in real life of course) - they will turn into snowflakes and float gently down into nothing.

There are 4 rocks to stop and not much time to do it (if you want to get a good score and get on the leaderboard). This game is fun and fast and requires good reflexes and a good strategy. Plan to break the smaller rocks first if you want a good score because the rocks fall faster as the game progresses. It also helps to decide where on their path you plan to click / tap the rocks.

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How to play ROCK FALL to practice
'Grouped frequency tables' for 7th grade

Free Math Games screenshot of Rock fall game for secondary

There are rocks falling from an unstable cliff. You need to break the rocks by clicking / tapping on them...

  1. Press "PLAY" on the settings page to open the game page.
  2. There is a short countdown before the game starts.
  3. Rocks start falling from the cliff.
  4. Click or tap on a rock to break it into a snowflake - a question box will open with up to 4 multiple choice answers or an on-screen keyboard.
  5. Enter or click/tap the correct math answer to close the question box.
  6. Rocks fall faster as the game progresses.
  7. Clear all the rocks to finish the game.
  8. It is a good idea to hit the small rock first as it gets much harder if you leave it until later.
  9. This is a timed game and your score is calculated by adding 10 seconds for each wrong answer to your game time.
  10. If you get one of the 10 best times for the topic you can add your name to the leaderboard for your chosen topic.
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