WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.hook FROM wp1f_actionscheduler_actions a
JOIN wp1f_actionscheduler_groups g ON g.group_id = a.group_id
WHERE g.slug = 'wp_mail_smtp' AND a.status IN ('in-progress', 'pending')
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a WHERE 1=1 AND a.hook='wp_mail_smtp_summary_report_email' AND a.status IN ('in-progress', 'pending') LIMIT 0, 1
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed]
INSERT INTO wp1f_actionscheduler_actions ( `hook`, `status`, `scheduled_date_gmt`, `scheduled_date_local`, `schedule`, `group_id`, `priority`, `args` )
SELECT 'wp_mail_smtp_summary_report_email', 'pending', '2026-05-18 11:00:00', '2026-05-18 14:00:00', 'O:32:\"ActionScheduler_IntervalSchedule\":5:{s:22:\"\0*\0scheduled_timestamp\";i:1779102000;s:18:\"\0*\0first_timestamp\";i:1779102000;s:13:\"\0*\0recurrence\";i:604800;s:49:\"\0ActionScheduler_IntervalSchedule\0start_timestamp\";i:1779102000;s:53:\"\0ActionScheduler_IntervalSchedule\0interval_in_seconds\";i:604800;}', 13, 10, '[null]' FROM DUAL
WHERE (
SELECT action_id FROM wp1f_actionscheduler_actions
WHERE status IN ( 'pending', 'in-progress' )
AND hook = 'wp_mail_smtp_summary_report_email'
AND `group_id` = 13
LIMIT 1 ) IS NULL
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a WHERE 1=1 AND a.hook='wp_mail_smtp_admin_notifications_update' AND a.status IN ('in-progress', 'pending') LIMIT 0, 1
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed]
INSERT INTO wp1f_actionscheduler_actions ( `hook`, `status`, `scheduled_date_gmt`, `scheduled_date_local`, `schedule`, `group_id`, `priority`, `args` )
SELECT 'wp_mail_smtp_admin_notifications_update', 'pending', '2026-05-17 16:45:45', '2026-05-17 19:45:45', 'O:32:\"ActionScheduler_IntervalSchedule\":5:{s:22:\"\0*\0scheduled_timestamp\";i:1779036345;s:18:\"\0*\0first_timestamp\";i:1779036345;s:13:\"\0*\0recurrence\";i:86400;s:49:\"\0ActionScheduler_IntervalSchedule\0start_timestamp\";i:1779036345;s:53:\"\0ActionScheduler_IntervalSchedule\0interval_in_seconds\";i:86400;}', 13, 10, '[null]' FROM DUAL
WHERE (
SELECT action_id FROM wp1f_actionscheduler_actions
WHERE status IN ( 'pending', 'in-progress' )
AND hook = 'wp_mail_smtp_admin_notifications_update'
AND `group_id` = 13
LIMIT 1 ) IS NULL
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a LEFT JOIN wp1f_actionscheduler_groups g ON g.group_id=a.group_id WHERE 1=1 AND g.slug='aioseo' AND a.hook='aioseo_cache_prune' AND a.args='[]' AND a.status IN ('in-progress', 'pending') LIMIT 0, 1
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a LEFT JOIN wp1f_actionscheduler_groups g ON g.group_id=a.group_id WHERE 1=1 AND g.slug='aioseo' AND a.hook='aioseo_cache_prune' AND a.args='[]' AND a.status IN ('in-progress', 'pending') LIMIT 0, 1
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed]
INSERT INTO wp1f_actionscheduler_actions ( `hook`, `status`, `scheduled_date_gmt`, `scheduled_date_local`, `schedule`, `group_id`, `priority`, `args` )
SELECT 'aioseo_cache_prune', 'pending', '2026-05-17 16:44:45', '2026-05-17 19:44:45', 'O:32:\"ActionScheduler_IntervalSchedule\":5:{s:22:\"\0*\0scheduled_timestamp\";i:1779036285;s:18:\"\0*\0first_timestamp\";i:1779036285;s:13:\"\0*\0recurrence\";i:86400;s:49:\"\0ActionScheduler_IntervalSchedule\0start_timestamp\";i:1779036285;s:53:\"\0ActionScheduler_IntervalSchedule\0interval_in_seconds\";i:86400;}', 9, 10, '[]' FROM DUAL
WHERE ( SELECT NULL FROM DUAL ) IS NULL
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a LEFT JOIN wp1f_actionscheduler_groups g ON g.group_id=a.group_id WHERE 1=1 AND g.slug='aioseo' AND a.hook='aioseo_cache_prune' AND a.args='[]' AND a.status IN ('in-progress', 'pending') LIMIT 0, 1
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a LEFT JOIN wp1f_actionscheduler_groups g ON g.group_id=a.group_id WHERE 1=1 AND g.slug='aioseo' AND a.hook='aioseo_cache_prune' AND a.args='[]' AND a.status IN ('in-progress', 'pending') LIMIT 0, 1
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed]
INSERT INTO wp1f_actionscheduler_actions ( `hook`, `status`, `scheduled_date_gmt`, `scheduled_date_local`, `schedule`, `group_id`, `priority`, `args` )
SELECT 'aioseo_cache_prune', 'pending', '2026-05-17 16:44:45', '2026-05-17 19:44:45', 'O:32:\"ActionScheduler_IntervalSchedule\":5:{s:22:\"\0*\0scheduled_timestamp\";i:1779036285;s:18:\"\0*\0first_timestamp\";i:1779036285;s:13:\"\0*\0recurrence\";i:86400;s:49:\"\0ActionScheduler_IntervalSchedule\0start_timestamp\";i:1779036285;s:53:\"\0ActionScheduler_IntervalSchedule\0interval_in_seconds\";i:86400;}', 9, 10, '[]' FROM DUAL
WHERE ( SELECT NULL FROM DUAL ) IS NULL
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a WHERE 1=1 AND a.hook='woocommerce_ac_send_email_action' AND a.status IN ('in-progress') ORDER BY a.scheduled_date_gmt ASC LIMIT 0, 1
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a WHERE 1=1 AND a.hook='woocommerce_ac_send_email_action' AND a.status IN ('pending') ORDER BY a.scheduled_date_gmt ASC LIMIT 0, 1
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed]
INSERT INTO wp1f_actionscheduler_actions ( `hook`, `status`, `scheduled_date_gmt`, `scheduled_date_local`, `schedule`, `group_id`, `priority`, `args` )
SELECT 'woocommerce_ac_send_email_action', 'pending', '2026-05-17 16:45:45', '2026-05-17 19:45:45', 'O:32:\"ActionScheduler_IntervalSchedule\":5:{s:22:\"\0*\0scheduled_timestamp\";i:1779036345;s:18:\"\0*\0first_timestamp\";i:1779036345;s:13:\"\0*\0recurrence\";i:900;s:49:\"\0ActionScheduler_IntervalSchedule\0start_timestamp\";i:1779036345;s:53:\"\0ActionScheduler_IntervalSchedule\0interval_in_seconds\";i:900;}', 10, 10, '[]' FROM DUAL
WHERE ( SELECT NULL FROM DUAL ) IS NULL
Improve scientific enquiry and practical skills with suggested key experiments and simple, structured guidance.
The Practical Skills Workbook provides additional support for the accompanying Cambridge IGCSE (TM) Biology Textbook.
Become accomplished scientists: the workbook provides a series of investigations with step-by-step guidance which leads you through the method and the use of apparatus, complete with safety notes.
Improve the quality of written work: guidance, prompts and write in frames provided throughout to help you record your observations, interpret data and evaluate the experiment.
Develop understanding and build confidence: plenty of exam-style questions are provided for preparation for practical exams or alternatives, whilst ‘Going Further’ questions encourage you to stretch yourself.
Exam Success in Cambridge IGCSE (R) & O Level Biology fully supports the latest Cambridge IGCSE (0610) & O Level (5090) syllabuses and is suitable for use alongside our Complete and Essential IGCSE Biology series.
The Guide helps students cope with the increased rigour of linear IGCSEs by bringing clarity and focus to exam preparation and by providing explicit exam guidance. Learners can recap content through easy-to-digest chunks, apply this via targeted revision activities, review and reflect on their work, and use exam practice and worked examples to achieve best results.
Exam Success in IGCSE & O Level Biology is written by Ron Pickering, teacher trainer for Cambridge and author of the Complete Biology Student Book. Students can benefit from his expertise and excellent understanding of what support they need in order to reach their full potential.
Other resources are also available: a Practical Workbook, Student Books and Workbooks. The Practical Workbook helps students to achieve practical exam success. The Complete or Essential Student Book is at the heart of delivering the course and is available in print, online or via a great-value print and online pack. The Workbook is for independent practice and strengthens exam potential inside and outside the classroom.
By (author)  Joe Skrakowski , By (author)  Harry Smith
Developed for the new International A Level specification, these new resources are specifically designed for international students, with a strong focus on progression, recognition and transferable skills, allowing learning in a local context to a global standard.
Recognized by universities worldwide and fully comparable to UK reformed GCE A levels.
Supports a modular approach, in line with the specification.
Appropriate international content puts learning in a real-world context, to a global standard, making it engaging and relevant for all learners.
Reviewed by a language specialist to ensure materials are written in a clear and accessible style.
The embedded transferable skills, needed for progression to higher education and employment, are signposted so students understand what skills they are developing and therefore go on to use these skills more effectively in the future.
Exam practice provides opportunities to assess understanding and progress, so students can make the best progress they can.
By (author)  Joe Skrakowski , By (author)  Harry Smith
Developed for the new International A Level specification, these new resources are specifically designed for international students, with a strong focus on progression, recognition and transferable skills, allowing learning in a local context to a global standard.
Recognized by universities worldwide and fully comparable to UK reformed GCE A levels.
Supports a modular approach, in line with the specification.
Appropriate international content puts learning in a real-world context, to a global standard, making it engaging and relevant for all learners.
Reviewed by a language specialist to ensure materials are written in a clear and accessible style.
The embedded transferable skills, needed for progression to higher education and employment, are signposted so students understand what skills they are developing and therefore go on to use these skills more effectively in the future.
Exam practice provides opportunities to assess understanding and progress, so students can make the best progress they can.
The Edexcel International GCSE (9-1) Business Studies Student Book provides comprehensive coverage of the specification and is designed to supply students with the best preparation possible for the examination.
Written by highly experienced Business Studies teacher and author Rob Jones.
Provides free access to an ActiveBook, a digital version of the Student Book, which can be accessed online, anytime, anywhere supporting learning beyond the classroom.
Learning is embedded with differentiated exercises, case studies and exam practice throughout.
Features of the Student Book include: *easy-to-use Assessment tasks, focusing clearly on either Reading, Writing or Speaking and Listening, are a central element of each Student book *’Assess your progress’ features to help students take control of their learning *clear success criteria to show students how to progress *APP-style Assessment tasks help you to assess students’ progress and focus them in a motivating way on areas requiring improvement *clear objectives at the start of each unit to show students what they will be learning.
WordPress database error: [Table './smDJtGH6wTJK5t/wp1f_actionscheduler_actions' is marked as crashed and last (automatic?) repair failed] SELECT a.action_id FROM wp1f_actionscheduler_actions a WHERE 1=1 AND a.hook='wc_schedule_pending_batch_processes' AND a.status IN ('in-progress', 'pending') LIMIT 0, 1
