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index 436e4a2..f5e77ae 100644
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diff --git a/01-format-data.html b/01-format-data.html
index 5a913ad..30b9635 100644
--- a/01-format-data.html
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@@ -447,7 +447,7 @@ <h4 class="accordion-header" id="headingSolution1">
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   </h4>
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-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
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diff --git a/02-common-mistakes.html b/02-common-mistakes.html
index 0339cb2..0296901 100644
--- a/02-common-mistakes.html
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diff --git a/03-dates-as-data.html b/03-dates-as-data.html
index 3ef51b1..3edae6c 100644
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   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p><img src="fig/solution_exercise_1_dates.png" class="figure"> {alt=‘dates, exersize
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@@ -400,7 +400,7 @@ <h4 class="accordion-header" id="headingSolution2">
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   </h4>
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>To get the year, type <code>=YEAR(NOW())</code> into any cell in
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@@ -502,7 +502,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 <div class="accordion-body">
 <ul><li>Click to the <code>dates</code> tab of the workbook and double-click
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diff --git a/04-quality-control.html b/04-quality-control.html
index 0215525..bc9e338 100644
--- a/04-quality-control.html
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diff --git a/05-exporting-data.html b/05-exporting-data.html
index aed1bbc..5ff6968 100644
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diff --git a/404.html b/404.html
index 1a8a75d..c441300 100644
--- a/404.html
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-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index 80f883c..48cd459 100644
--- a/CODE_OF_CONDUCT.html
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diff --git a/LICENSE.html b/LICENSE.html
index 99d4b6d..5902a10 100644
--- a/LICENSE.html
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diff --git a/NEWS.html b/NEWS.html
index 830a6b9..dc0432d 100644
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diff --git a/aio.html b/aio.html
index cf03dbe..23545e4 100644
--- a/aio.html
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   </h4>
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-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <ul>
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   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>To get the year, type <code>=YEAR(NOW())</code> into any cell in
@@ -1559,7 +1559,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ul>
 <li>Click to the <code>dates</code> tab of the workbook and double-click
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   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
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diff --git a/datamanagement.html b/datamanagement.html
index ebbc8c4..70e7902 100644
--- a/datamanagement.html
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   "dateCreated": "2023-05-03",
   "dateModified": "2023-05-03",
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diff --git a/discuss.html b/discuss.html
index 6920e41..69adb81 100644
--- a/discuss.html
+++ b/discuss.html
@@ -378,7 +378,7 @@ <h3 id="dealing-with-commas-as-part-of-data-values-in-csv-files">Dealing with co
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   "dateCreated": "2023-05-03",
   "dateModified": "2023-05-03",
-  "datePublished": "2023-07-18"
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 }
 
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diff --git a/images.html b/images.html
index 09b1973..b7b3f29 100644
--- a/images.html
+++ b/images.html
@@ -446,8 +446,8 @@ <h3 id="05-exporting-data-figure-3">Figure 3</h3>
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   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/images.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/index.html b/index.html
index 1ff5bd2..52b927c 100644
--- a/index.html
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   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
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diff --git a/instructor-notes.html b/instructor-notes.html
index d77e0c8..5584e76 100644
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   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
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diff --git a/instructor/00-intro.html b/instructor/00-intro.html
index abf0a67..c0c6c6a 100644
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-  "datePublished": "2023-07-18"
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diff --git a/instructor/01-format-data.html b/instructor/01-format-data.html
index 669b5d4..8a94c77 100644
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <ul><li>Take about 10 minutes to work on this exercise.</li>
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@@ -561,7 +561,7 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
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diff --git a/instructor/02-common-mistakes.html b/instructor/02-common-mistakes.html
index 094dd01..6dda038 100644
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diff --git a/instructor/03-dates-as-data.html b/instructor/03-dates-as-data.html
index 6a147cf..10c5b8b 100644
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+++ b/instructor/03-dates-as-data.html
@@ -362,7 +362,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p><img src="../fig/solution_exercise_1_dates.png" class="figure"> {alt=‘dates, exersize
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@@ -402,7 +402,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>To get the year, type <code>=YEAR(NOW())</code> into any cell in
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@@ -504,7 +504,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ul><li>Click to the <code>dates</code> tab of the workbook and double-click
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diff --git a/instructor/04-quality-control.html b/instructor/04-quality-control.html
index 8b3239d..c9c5ba9 100644
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-  "datePublished": "2023-07-18"
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diff --git a/instructor/05-exporting-data.html b/instructor/05-exporting-data.html
index 49384cc..702eb8c 100644
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   "dateModified": "2023-05-03",
-  "datePublished": "2023-07-18"
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diff --git a/instructor/404.html b/instructor/404.html
index a75a0b5..11f571f 100644
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diff --git a/instructor/CODE_OF_CONDUCT.html b/instructor/CODE_OF_CONDUCT.html
index ada1900..b7571d2 100644
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index 6bcace9..a4cf3dd 100644
--- a/instructor/LICENSE.html
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diff --git a/instructor/aio.html b/instructor/aio.html
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 <ul>
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   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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   </h4>
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>To get the year, type <code>=YEAR(NOW())</code> into any cell in
@@ -1561,7 +1561,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ul>
 <li>Click to the <code>dates</code> tab of the workbook and double-click
@@ -2151,8 +2151,8 @@ <h3 class="callout-title">Keypoints<a class="anchor" aria-label="anchor" href="#
   "url": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/aio.html",
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/aio.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
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diff --git a/instructor/datamanagement.html b/instructor/datamanagement.html
index b3f7405..828c10e 100644
--- a/instructor/datamanagement.html
+++ b/instructor/datamanagement.html
@@ -390,7 +390,7 @@ <h1>Data Management Tips</h1>
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/datamanagement.html",
   "dateCreated": "2023-05-03",
   "dateModified": "2023-05-03",
-  "datePublished": "2023-07-18"
+  "datePublished": "2023-07-25"
 }
 
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diff --git a/instructor/discuss.html b/instructor/discuss.html
index 1d22274..d47039b 100644
--- a/instructor/discuss.html
+++ b/instructor/discuss.html
@@ -380,7 +380,7 @@ <h3 id="dealing-with-commas-as-part-of-data-values-in-csv-files">Dealing with co
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/discuss.html",
   "dateCreated": "2023-05-03",
   "dateModified": "2023-05-03",
-  "datePublished": "2023-07-18"
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/instructor/images.html b/instructor/images.html
index a007565..39e4ade 100644
--- a/instructor/images.html
+++ b/instructor/images.html
@@ -444,8 +444,8 @@ <h3 id="05-exporting-data-figure-3">Figure 3</h3>
   "url": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/images.html",
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/images.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/instructor/index.html b/instructor/index.html
index 7efa56b..576d26c 100644
--- a/instructor/index.html
+++ b/instructor/index.html
@@ -531,8 +531,8 @@ <h4 id="linux">Linux<a class="anchor" aria-label="anchor" href="#linux"></a></h4
   "url": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/index.html",
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/index.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/instructor/instructor-notes.html b/instructor/instructor-notes.html
index d67bf4f..0692f28 100644
--- a/instructor/instructor-notes.html
+++ b/instructor/instructor-notes.html
@@ -519,8 +519,8 @@ <h4 id="people-are-not-interactive-or-responsive-on-the-exercise">People are not
   "url": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/instructor-notes.html",
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/instructor-notes.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/instructor/key-points.html b/instructor/key-points.html
index a7a8ba7..6b5c5e9 100644
--- a/instructor/key-points.html
+++ b/instructor/key-points.html
@@ -406,8 +406,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/key-points.html",
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/key-points.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/instructor/profiles.html b/instructor/profiles.html
index dfd7dd1..6f9ab6c 100644
--- a/instructor/profiles.html
+++ b/instructor/profiles.html
@@ -289,8 +289,8 @@ <h1>Learner Profiles</h1>
   "url": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/profiles.html",
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/profiles.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/instructor/reference.html b/instructor/reference.html
index 1733581..bf97bab 100644
--- a/instructor/reference.html
+++ b/instructor/reference.html
@@ -388,7 +388,7 @@ <h1>Glossary</h1>
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/instructor/reference.html",
   "dateCreated": "2023-05-03",
   "dateModified": "2023-05-03",
-  "datePublished": "2023-07-18"
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/key-points.html b/key-points.html
index a6d8c83..d0ce377 100644
--- a/key-points.html
+++ b/key-points.html
@@ -408,8 +408,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://preview.carpentries.org/spreadsheet-ecology-lesson/key-points.html",
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/key-points.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/pkgdown.yml b/pkgdown.yml
index ac84d80..8103a23 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 2.19.2
 pkgdown: 2.0.7
 pkgdown_sha: ~
 articles: {}
-last_built: 2023-07-18T01:58Z
+last_built: 2023-07-25T01:40Z
 
diff --git a/profiles.html b/profiles.html
index 45c28d8..24222ab 100644
--- a/profiles.html
+++ b/profiles.html
@@ -289,8 +289,8 @@ <h1>Learner Profiles</h1>
   "url": "https://preview.carpentries.org/spreadsheet-ecology-lesson/profiles.html",
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/profiles.html",
   "dateCreated": "2023-05-03",
-  "dateModified": "2023-07-18",
-  "datePublished": "2023-07-18"
+  "dateModified": "2023-07-25",
+  "datePublished": "2023-07-25"
 }
 
   </script><script>
diff --git a/reference.html b/reference.html
index 3fbaf86..c8cb6c6 100644
--- a/reference.html
+++ b/reference.html
@@ -386,7 +386,7 @@ <h1>Glossary</h1>
   "identifier": "https://preview.carpentries.org/spreadsheet-ecology-lesson/reference.html",
   "dateCreated": "2023-05-03",
   "dateModified": "2023-05-03",
-  "datePublished": "2023-07-18"
+  "datePublished": "2023-07-25"
 }
 
   </script><script>