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Head-to-head · Google Workspace Academic Software

CK-12 FlexBook 2.0 vs Pear Deck

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score CK-12 FlexBook 2.0 #1 in Google Workspace Academic Software 9.2/10 Free plan Free plan✓ 1 of 3 features Visit CK-12
Pear Deck #6 in Google Workspace Academic Software 8.3/10 Free plan Free plan✓ 0 of 3 features Visit Pear Deck

CK-12 FlexBook 2.0 leads on 0 checks, Pear Deck on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreCK-12 FlexBook 2.0 · 9.2/10
  • Free planboth
  • Most featuresCK-12 FlexBook 2.0 · 1 of 3

CK-12 FlexBook 2.0 scores higher on our rubric for google workspace academic software: 9.2 against 8.3 out of 10; our editors rank them #1 and #6.

CK-12 FlexBook 2.0 is the better fit for free K–12 science lessons and simulations. Pear Deck is the better fit for teachers adding student interaction to slide lessons.

  • CK-12 FlexBook 2.0 fits best

    Free K–12 science lessons and simulations

  • Pear Deck fits best

    Teachers adding student interaction to slide lessons

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Side by side

Feature CK-12 FlexBook 2.0 9.2/10 Visit ↗ Pear Deck 8.3/10 Visit ↗
At a glance
Editor score 9.2 8.3
Ranking #1 in Google Workspace Academic Software #6 in Google Workspace Academic Software
Best for Free K–12 science lessons and simulations Teachers adding student interaction to slide lessons
Pricing model Free Free plan + paid
Starting price Free plan $149/yr
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Integrations 6 integrations 8 integrations
Features CK-12 FlexBook 2.0 1/3 · Pear Deck 0/3
Google Classroom integration Not checked yet Not checked yet
Roster sync Not checked yet Not checked yet
Assessment tools ✓ (best) Not checked yet
Specs
Workspace editions Not checked yet Not checked yet
Supported platforms Browser on laptop, desktop, Chromebook, tablet, or mobile device Not checked yet
Student limit Not checked yet Not checked yet
Our review
Pros
  • Teachers can rearrange textbook chapters and add their own materials.
  • Lessons combine videos, interactives, practice, and science simulations.
  • Progress monitoring, assignments, and quizzes support classroom delivery.
  • Offers interactive questions, polls, quizzes, and formative assessments.
  • Supports instructor-paced and student-paced presentations.
  • Collects and displays responses in real time, with anonymous projection.
Cons
  • Its focus is K–12 science rather than a broad range of school subjects.
  • Classroom delivery depends on a browser-based platform.
  • Its feature set may be more than needed for teachers seeking only a textbook.
  • Teacher Premium costs $149 per year.
  • Premium adds named responses and review tools not listed in Teacher Free.
  • Its focus is interactive slide lessons rather than broader lesson planning.
Our verdict

CK-12 FlexBook 2.0 gives students and teachers free, customizable digital textbooks and interactive learning materials for K–12 science. Parents and schools can also access the materials. Teachers can rearrange chapters, add resources,…

Read the review →

Pear Deck adds student interaction to lessons built in Google Slides or PowerPoint Online. Teachers can present at their own pace or let students move through a lesson independently, while students respond from their devices. It suits…

Read the review →
  1. CK-12 FlexBook 2.0Google Workspace Academic Software 9.2Free plan
  2. Pear DeckGoogle Workspace Academic Software 8.3Free plan

Strengths and trade-offs

  • CK-12 FlexBook 2.0 — where it wins

    • Teachers can rearrange textbook chapters and add their own materials.
    • Lessons combine videos, interactives, practice, and science simulations.
    • Progress monitoring, assignments, and quizzes support classroom delivery.

    Where it doesn't

    • Its focus is K–12 science rather than a broad range of school subjects.
    • Classroom delivery depends on a browser-based platform.
    • Its feature set may be more than needed for teachers seeking only a textbook.

  • Pear Deck — where it wins

    • Offers interactive questions, polls, quizzes, and formative assessments.
    • Supports instructor-paced and student-paced presentations.
    • Collects and displays responses in real time, with anonymous projection.

    Where it doesn't

    • Teacher Premium costs $149 per year.
    • Premium adds named responses and review tools not listed in Teacher Free.
    • Its focus is interactive slide lessons rather than broader lesson planning.
  • CK-12 FlexBook 2.09.2/10 · Free plan

    A free browser-based platform for customizable K–12 science lessons, practice, and assessment.

    Visit CK-12Full verdict →
  • Pear Deck8.3/10 · Free plan

    Adds live and student-paced questions to Google Slides and PowerPoint Online lessons.

    Visit Pear DeckFull verdict →

More comparisons

All google workspace academic software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update