BBP Activity 11: Interactive Data Visualization with Pygal

🎮 Activity Time!

Time: 30-40 minutes
What you'll create:

• An interactive bar chart showing teacher data
• A program that increments scores

Activity Overview

In this activity, you'll learn to create interactive data visualizations using the Pygal library. You'll work with teacher data to create bar charts and practice variable incrementing operations.

Before You Start:

• Login to EduBlocks with your Google account
• Have your Dashboard ready
• Remember to save your work every 5 minutes!

Setup Instructions

1. Login to EduBlocks: Go to: https://app.edublocks.org/login

2. Import the Activity Project:

   • Download the project file from your Dashboard
   • Click on the "Projects" icon in EduBlocks
   • Import the downloaded project file
   • You'll see pre-loaded code with teacher data

💡 Save Your Progress!

Remember to click the save button every few minutes! It's like saving your game progress - you don't want to lose your hard work! 💾

Steps to Complete Your Data Visualization Activity

Part One: Students Taught Counter 📊

Your EduBlocks project shows teachers in Telebort and how many students they've taught in a week. Let's create a cool bar chart to visualize the total students taught by each teacher!

Follow these steps:

1. Create a loop for teachers

   • Drag a for loop block
   • Set it to loop through all teachers in your data
   • This is like going through a list of teacher names one by one!

2. Add up student counts

   • Drag an operation block inside your loop
   • Make it add all student counts from different time slots and days
   • Think of it like counting all the students in a teacher's classes for the whole week

3. Create a list to store totals

   • Drag a list block and name it total_Students
   • This list will hold the total count for each teacher

4. Append totals to your list

   • Drag an append block
   • Connect it to add each teacher's total to your total_Students list
   • Make sure this happens inside your loop!

5. Create a bar chart

   • Drag a pygal.Bar() block
   • This creates an empty chart ready for your data

6. Add data to the chart

   • Create another loop to go through each teacher
   • Use the add block to add each teacher's name and total to the chart
   • This is like labeling each bar with a teacher's name and their student count

7. Render your chart

   • Drag the render block
   • This displays your beautiful bar chart!

💡 Having Trouble?

• Make sure your loops are properly nested (one inside the other where needed)
• Check that you're adding ALL time slots for each teacher
• Remember: lists in Python start at position 0, not 1!

Your chart should look like this:

Part 2: Score Incrementing Exercise 🎯

Now let's practice incrementing variables - it's like adding points to your game score!

Follow these steps:

1. Create your starting score

   • Drag a variable block
   • Name it score
   • Set the value to 100
   • This is your starting score!

2. Print the starting score

   • Drag a print block
   • Connect it to print your score variable
   • You should see: 100

3. Add 300 points to your score

   • Drag an increment block (+=)
   • Set it to add 300 to your score variable
   • This is like getting bonus points in a game!

4. Print the new score

   • Drag another print block
   • Print the score variable again
   • You should see: 400

5. Add another 300 points

   • Drag another increment block (+=)
   • Add 300 more to your score variable
   • More bonus points!

6. Print the final score

   • Drag one more print block
   • Print the score variable
   • You should see: 700

💡 Python Connection!

In real Python, score += 300 is the same as score = score + 300. The += is just a shortcut that programmers love to use!

Your output should look like this:

Troubleshooting Tips 🔧

Chart not showing?

• Make sure you have the render block at the end
• Check that your loops are completing properly
• Verify all teacher names are spelled correctly

Numbers look wrong?

• Double-check you're adding ALL time slots for each teacher
• Make sure you're not accidentally resetting your totals
• Remember to append to the list AFTER calculating the total

Score not incrementing?

• Use the += block, not the regular = block
• Make sure you're printing after each increment
• Check that your variable name is exactly score

🏆 Challenge Yourself!

Ready for some extra challenges? Try these:

1. Color your chart!

   • Add different colors to each bar in your chart
   • Make the highest bar a special color

2. Add chart labels

   • Give your chart a title like "Telebort Teacher Champions!"
   • Add labels to the x and y axes

3. Score multiplier challenge

   • Instead of adding 300, try multiplying your score by 2
   • Create a "power-up" that doubles your score!

4. Compare teachers

   • Find which teacher taught the most students
   • Print a special message for the top teacher

Required Elements Checklist ✅

Before submitting, make sure you have:

• Loop that goes through all teachers
• Math operations that add up student counts
• total_Students list created and filled
• Pygal Bar chart created
• Data added to chart with teacher names and totals
• Chart rendered (displayed)
• Score variable starting at 100
• Two increments of 300 each
• Three print statements showing: 100, 400, 700

Project Submission 📤

When you've completed both parts of your "Interactive Data Visualization with Pygal" activity:

Submit Your Project Here

💡 Before You Submit!

• Test your bar chart - does it show all teachers?
• Run your score program - do you see 100, 400, 700?
• Save your work one more time!
• You need to submit 2 project links - one for each part

Great job creating data visualizations! You're becoming a real data scientist! 🌟