Goal:  Open the Khan Academy App, Select the Test Prep Tab, then select the Digital SAT Math Tab, review the materials and take the practice exam. 
Steps:
action: action_type: open_app
app_name: Khan Academy
step_instruction: Open the Khan Academy App
action: action_type: click
step_instruction: Click on the Test prep Tab 
action: action_type: click
step_instruction: Click on the Digital SAT Math Tab
action: action_type: scroll
direction: down
step_instruction: Swipe up to review the materials 
action: action_type: scroll
direction: down
step_instruction: Swipe up to review the materials 
action: action_type: scroll
direction: down
step_instruction: Swipe up to review the materials 
action: action_type: scroll
direction: down
step_instruction: Swipe up to review the materials 
action: action_type: scroll
direction: down
step_instruction: Swipe up to review the materials 
action: action_type: scroll
direction: down
step_instruction: Swipe up to review the materials 
action: action_type: click
step_instruction: Click on the Take Course Challenge Button 
action: action_type: click
step_instruction: Click on the Let's go button to take a practice exam 
action: action_type: click
step_instruction: Select the option "B"
action: action_type: click
step_instruction: Click on the Check Button at the bottom right corner of the screen