diff --git a/IntroDataViz_TeachingSlides.pptx b/IntroDataViz_TeachingSlides.pptx
new file mode 100644
index 00000000..9e1529da
Binary files /dev/null and b/IntroDataViz_TeachingSlides.pptx differ
diff --git a/instructor/03-communicating-the-message.html b/instructor/03-communicating-the-message.html
index d5a5d29a..44872bcb 100644
--- a/instructor/03-communicating-the-message.html
+++ b/instructor/03-communicating-the-message.html
@@ -314,7 +314,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>Other tools can have many advantages as well. Certain software which
 use a command line interface may have a steeper learning curve, but has
diff --git a/instructor/aio.html b/instructor/aio.html
index d4f608d3..6a8ae219 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -1479,7 +1479,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>Other tools can have many advantages as well. Certain software which
 use a command line interface may have a steeper learning curve, but has
diff --git a/pkgdown.yml b/pkgdown.yml
index 616692d7..2f079d4d 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 2.19.2
 pkgdown: 2.0.7
 pkgdown_sha: ~
 articles: {}
-last_built: 2023-12-18T14:00Z
+last_built: 2023-12-18T14:03Z