TeamBasedInquiryLearning · siwelwerd · Jul 29, 2026 · Jul 28, 2026 · Jul 28, 2026 · Jul 29, 2026
diff --git a/site/pages/library.md b/site/pages/library.md
@@ -6,32 +6,33 @@ slug: library
 We currently offer classroom-ready materials for **Precalculus**, **Calculus**, and
 **Linear Algebra**. New editions are released annually each summer.
 
-#### Precalculus 2025 Edition
-
-- [HTML](https://library.tbil.org/2025/precalculus/)
-    - [Instructor Edition](https://library.tbil.org/2025/precalculus/instructor/)
-- [PDF](https://library.tbil.org/2025/precalculus/print/TBIL-Precalculus.pdf)
-    - [Instructor Edition](https://library.tbil.org/2025/precalculus/print/TBIL-Precalculus-Instructor.pdf)
-- [Slides](https://library.tbil.org/2025/precalculus/print/TBIL-Precalculus-Slides.pdf)
-- [Exercises](https://library.tbil.org/2025/precalculus/exercises/)
-
-#### Calculus 2025 Edition
-
-- [HTML](https://library.tbil.org/2025/calculus/)
-    - [Instructor Edition](https://library.tbil.org/2025/calculus/instructor/)
-- [PDF](https://library.tbil.org/2025/calculus/print/TBIL-Calculus.pdf)
-    - [Instructor Edition](https://library.tbil.org/2025/calculus/print/TBIL-Calculus-Instructor.pdf)
-- [Slides](https://library.tbil.org/2025/calculus/print/TBIL-Calculus-Slides.pdf)
-- [Exercises](https://library.tbil.org/2025/calculus/exercises/)
-
-#### Linear Algebra 2025 Edition
-
-- [HTML](https://library.tbil.org/2025/linear-algebra/)
-    - [Instructor Edition](https://library.tbil.org/2025/linear-algebra/instructor/)
-- [PDF](https://library.tbil.org/2025/linear-algebra/print/TBIL-Linear-Algebra.pdf)
-    - [Instructor Edition](https://library.tbil.org/2025/linear-algebra/print/TBIL-Linear-Algebra-Instructor.pdf)
-- [Slides](https://library.tbil.org/2025/linear-algebra/print/TBIL-Linear-Algebra-Slides.pdf)
-- [Exercises](https://library.tbil.org/2025/linear-algebra/exercises/)
+#### Precalculus 2026 Edition
+
+- [HTML](https://library.tbil.org/2026/precalculus/)
+    - [Instructor Edition](https://library.tbil.org/2026/precalculus/instructor/)
+- [PDF](https://library.tbil.org/2026/precalculus/print/TBIL-Precalculus.pdf)
+    - [Instructor Edition](https://library.tbil.org/2026/precalculus/print/TBIL-Precalculus-Instructor.pdf)
+- [Slides](https://library.tbil.org/2026/precalculus/print/TBIL-Precalculus-Slides.pdf)
+- [Exercises](https://library.tbil.org/2026/precalculus/exercises/)
+
+#### Calculus 2026 Edition
+
+- [HTML](https://library.tbil.org/2026/calculus/)
+    - [Instructor Edition](https://library.tbil.org/2026/calculus/instructor/)
+- [PDF](https://library.tbil.org/2026/calculus/print/TBIL-Calculus.pdf)
+    - [Instructor Edition](https://library.tbil.org/2026/calculus/print/TBIL-Calculus-Instructor.pdf)
+- [Slides](https://library.tbil.org/2026/calculus/print/TBIL-Calculus-Slides.pdf)
+- [Exercises](https://library.tbil.org/2026/calculus/exercises/)
+
+#### Linear Algebra 2026 Edition
+
+- [HTML](https://library.tbil.org/2026/linear-algebra/)
+    - [Instructor Edition](https://library.tbil.org/2026/linear-algebra/instructor/)
+- [PDF](https://library.tbil.org/2026/linear-algebra/print/TBIL-Linear-Algebra.pdf)
+    - [Instructor Edition](https://library.tbil.org/2026/linear-algebra/print/TBIL-Linear-Algebra-Instructor.pdf)
+- [Slides](https://library.tbil.org/2026/linear-algebra/print/TBIL-Linear-Algebra-Slides.pdf)
+- [Exercises](https://library.tbil.org/2026/linear-algebra/exercises/)
+- [Purchase a printed activity book](https://www.619wreath.com/store/p56/Lin-alg-TBIL.html)
 
 ---
 
@@ -57,11 +58,14 @@ but be warned - these are under active development and can change at any time!
 Older editions of our books are archived at these links:
 
 - Precalculus
+    - [2025 Edition](https://library.tbil.org/2025/precalculus/)
     - [2024 Trial Edition](https://library.tbil.org/2024/precalculus/)
 - Calculus
+    - [2025 Edition](https://library.tbil.org/2025/calculus/)
     - [2024 Edition](https://library.tbil.org/2024/calculus/)
     - [Pre-2024 archive](https://teambasedinquirylearning.github.io/calculus/)
 - Linear Algebra
+    - [2025 Edition](https://library.tbil.org/2025/linear-algebra/)
     - [2024 Edition](https://library.tbil.org/2024/linear-algebra/)
     - [Pre-2024 archive](https://teambasedinquirylearning.github.io/linear-algebra/)
 

diff --git a/site/updates/20260728.md b/site/updates/20260728.md
@@ -0,0 +1,19 @@
+---
+title: 2026 Version of TBIL Resource Library Released
+date: 2026-07-28
+author: Drew Lewis
+---
+
+The 2026 versions of our TBIL activity books (for Precalculus, Calculus, and Linear Algebra) are
+now available in the [TBIL Resource Library](https://library.tbil.org).  These 
+feature updates, corrections, and additions contributed by members of the TBIL Community
+over the past year.
+
+We are also excited to announce that we are publishing a printed version of the 
+_Linear Algebra for Team-Based Inquiry Learning_ activity book.  The official launch 
+date is August 15, with preorders available now through 
+[619 Wreath Publishing](https://www.619wreath.com/store/p56/Lin-alg-TBIL.html).  The 
+HTML version of the books will always remain freely available on this website in
+the [TBIL Resource Library](https://library.tbil.org).  
+
+
diff --git a/source/calculus/exercises/bank.xml b/source/calculus/exercises/bank.xml
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <bank xmlns="https://checkit.clontz.org" version="0.2">
-    <title>Calculus for Team-Based Inquiry Learning: 2025 Edition</title>
-    <slug>tbil-calculus-2025</slug>
+    <title>Calculus for Team-Based Inquiry Learning: 2026 Edition</title>
+    <slug>tbil-calculus-2026</slug>
     <url>https://tbil.org</url>
     <outcomes>
         <outcome>

diff --git a/source/calculus/source/main.ptx b/source/calculus/source/main.ptx
@@ -5,8 +5,8 @@
 
   <book xml:id="cal1">
     <title>Calculus for Team-Based Inquiry Learning</title>
-    <subtitle component="main">2025 Edition</subtitle>
-    <subtitle component="instructor-nonpreview">2025 Edition &#x2014; Instructor Version</subtitle>
+    <subtitle component="main">2026 Edition</subtitle>
+    <subtitle component="instructor-nonpreview">2026 Edition &#x2014; Instructor Version</subtitle>
     <subtitle component="preview">PREVIEW Edition</subtitle>
 
     <xi:include href="meta/frontmatter.ptx" />

diff --git a/source/linear-algebra/exercises/bank.xml b/source/linear-algebra/exercises/bank.xml
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <bank xmlns="https://checkit.clontz.org" version="0.2">
-    <title>Linear Algebra for Team-Based Inquiry Learning: 2025 Edition</title>
-    <slug>tbil-la-2025</slug>
+    <title>Linear Algebra for Team-Based Inquiry Learning: 2026 Edition</title>
+    <slug>tbil-la-2026</slug>
     <url>https://tbil.org</url>
     <outcomes>
         <outcome>

diff --git a/source/linear-algebra/source/main.ptx b/source/linear-algebra/source/main.ptx
@@ -4,7 +4,7 @@
     <book xml:id="linear-algebra-for-team-based-inquiry-learning">
         <title>Linear Algebra for Team-Based Inquiry Learning</title>
         <subtitle component="main">2026 Edition</subtitle>
-        <subtitle component="instructor-nonpreview">2025 Edition &#x2014; Instructor Version</subtitle>
+        <subtitle component="instructor-nonpreview">2026 Edition &#x2014; Instructor Version</subtitle>
         <subtitle component="preview">PREVIEW Edition</subtitle>
 
         <xi:include href="meta/frontmatter.ptx"/>

diff --git a/source/precalculus/exercises/bank.xml b/source/precalculus/exercises/bank.xml
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <bank xmlns="https://checkit.clontz.org" version="0.2">
-    <title>Precalculus for Team-Based Inquiry Learning: 2025 Edition</title>
-    <slug>tbil-precalculus-2025</slug>
+    <title>Precalculus for Team-Based Inquiry Learning: 2026 Edition</title>
+    <slug>tbil-precalculus-2026</slug>
     <url>https://tbil.org</url>
     <outcomes>
 

diff --git a/source/precalculus/source/main.ptx b/source/precalculus/source/main.ptx
@@ -6,8 +6,8 @@
 
   <book xml:id="my-great-book">
     <title>Precalculus for Team-Based Inquiry Learning</title>
-    <subtitle component="main">2025 Edition</subtitle>
-    <subtitle component="instructor-nonpreview">2025 Edition &#x2014; Instructor Version</subtitle>
+    <subtitle component="main">2026 Edition</subtitle>
+    <subtitle component="instructor-nonpreview">2026 Edition &#x2014; Instructor Version</subtitle>
     <subtitle component="preview">PREVIEW Edition</subtitle>
 
     <!-- Include frontmatter -->

diff --git a/source/precalculus/source/meta/frontmatter.ptx b/source/precalculus/source/meta/frontmatter.ptx
@@ -72,31 +72,8 @@ This work includes materials used under license from the following works:
 
   <preface xml:id="instructor-notes">
     <title>For Instructors</title>
-    <paragraphs xml:id="first-edition-welcome">
-      <title>Welcome to our first edition!</title>
-
-      <p>
-We're excited to share with you our first edition of
-Precalculus for Team-Based Inquiry Learning! These activities, which mostly
-cover topics from College Algebra, are being
-used in a few classrooms for the first time in Fall 2024. More
-activities are being designed to be included in our 2025 editions,
-with a goal of fully supporting Precalculus courses in Fall 2025.
-Similarly, our exercise bank is a work-in-progress.
-      </p>
-      <p>
-We're providing this first edition for those who are eager to try out
-TBIL in their precalculus classrooms, with the understanding that this
-book will likely change a lot between now and our next edition, once we've
-tried it in our own classrooms! Are you interested in joining the community
-using these materials, and possibly contributing back to these free and
-open-source resources? Join the conversation at <url href="http://chat.tbil.org"/>;
-we look forward to hearing from you, particularly if you have feedback
-from your students on these activities.
-      </p>
-
-    </paragraphs>
-
+    <xi:include href="../../../common/TBIL.ptx"/>
+    <xi:include href="../../../common/instructor-version.ptx"/>
     <xi:include href="../../../common/community.ptx"/>
   </preface>